ответ: 4 1/8
3,25+(-1 3/4))+(-1 2/3+(-1 4/8))=-8 1/6
1) -3,25+-(1 3/4)=-3,25-1,75=-5
2) -1 2/3+(-1 4/8)=-5/3-3/2=-10/6-9/6=-19/6=-3 1/6
3) -5+(-3 1/6)=-5-3 1/6=-8 1/6
250:50=5
105*5= 525
560*270=151200
151200+525=151725
151725-127908=23817
1.-13/4=-3.25
2.-3.25-3,25=-6,5
3.-4-1,75=-5,75
4,-6,5-5,75=-12,25
1) _36008:4
36 9002
_8
8
2) 77434+9002= 86436
3) 86436:4=12348
4) 12348*50=617 400
1) - 3,25 - 1ц.3/4 = - 3 1/4 - 1ц.3/4 = - 5
2) - 1ц. 2/3 - 1ц. 4/8 = - 1ц.16/24 - 1ц.12/24 = - 2ц.28/24 = - 3ц.1/6
3) - 5 - 3ц.1/6 = - 8ц.1/6
ответ в примере: - 8ц.1/6
(78+22)×43=4300 , вот
(450:5:(3х6)+35)х7-6х40+(540:60+7)х(63:9)=(450:5:18+35)х7-6х40+16х7=40х7-6х40+16х7=280-6х40+16х7=280-240+16х7=280-240+112=152
(0,8²*1,5625-0,3122):0,01-0,156:0,2=188.25
(-3,25+(-1 3/4))+(-1 2/3+(-1 4/8))=-8 1/6
1)-3,25+(-1 3/4)=-3,25-1,75=-5
2)-1 2/3+(-1 4/)=-1 2/3-1 1/2=-1 4/6-1 3/6=-2 7/6=-3 1/6
3)-5-3 1/6=-8 1/6
Пошаговое объяснение:
ответ: 4 1/8
3,25+(-1 3/4))+(-1 2/3+(-1 4/8))=-8 1/6
1) -3,25+-(1 3/4)=-3,25-1,75=-5
2) -1 2/3+(-1 4/8)=-5/3-3/2=-10/6-9/6=-19/6=-3 1/6
3) -5+(-3 1/6)=-5-3 1/6=-8 1/6
250:50=5
105*5= 525
560*270=151200
151200+525=151725
151725-127908=23817
1.-13/4=-3.25
2.-3.25-3,25=-6,5
3.-4-1,75=-5,75
4,-6,5-5,75=-12,25
1) _36008:4
36 9002
_8
8
2) 77434+9002= 86436
3) 86436:4=12348
4) 12348*50=617 400
1) - 3,25 - 1ц.3/4 = - 3 1/4 - 1ц.3/4 = - 5
2) - 1ц. 2/3 - 1ц. 4/8 = - 1ц.16/24 - 1ц.12/24 = - 2ц.28/24 = - 3ц.1/6
3) - 5 - 3ц.1/6 = - 8ц.1/6
ответ в примере: - 8ц.1/6
(78+22)×43=4300 , вот
(450:5:(3х6)+35)х7-6х40+(540:60+7)х(63:9)=(450:5:18+35)х7-6х40+16х7=40х7-6х40+16х7=280-6х40+16х7=280-240+16х7=280-240+112=152
(0,8²*1,5625-0,3122):0,01-0,156:0,2=188.25
(-3,25+(-1 3/4))+(-1 2/3+(-1 4/8))=-8 1/6
1)-3,25+(-1 3/4)=-3,25-1,75=-5
2)-1 2/3+(-1 4/)=-1 2/3-1 1/2=-1 4/6-1 3/6=-2 7/6=-3 1/6
3)-5-3 1/6=-8 1/6
Пошаговое объяснение:
x = 2 + yx = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=5x = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 3 + 2y x=3+2*(-1)=3-2-1x = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 3 + 2y x=3+2*(-1)=3-2-13) y = 11 - 2xx = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 3 + 2y x=3+2*(-1)=3-2-13) y = 11 - 2x5x - 4y = 8 5x - 4(11 - 2x) = 8 5x - 44 + 8x = 8x = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 3 + 2y x=3+2*(-1)=3-2-13) y = 11 - 2x5x - 4y = 8 5x - 4(11 - 2x) = 8 5x - 44 + 8x = 813x = 44 + 8 13x = 52 x = 4 y=11-2*4=11-8=3x = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 3 + 2y x=3+2*(-1)=3-2-13) y = 11 - 2x5x - 4y = 8 5x - 4(11 - 2x) = 8 5x - 44 + 8x = 813x = 44 + 8 13x = 52 x = 4 y=11-2*4=11-8=34) x-2y=11 x-2(2x-5)=11 x-4x+10=11 3x = - 1x = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 3 + 2y x=3+2*(-1)=3-2-13) y = 11 - 2x5x - 4y = 8 5x - 4(11 - 2x) = 8 5x - 44 + 8x = 813x = 44 + 8 13x = 52 x = 4 y=11-2*4=11-8=34) x-2y=11 x-2(2x-5)=11 x-4x+10=11 3x = - 1x = - 1/3x = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 3 + 2y x=3+2*(-1)=3-2-13) y = 11 - 2x5x - 4y = 8 5x - 4(11 - 2x) = 8 5x - 44 + 8x = 813x = 44 + 8 13x = 52 x = 4 y=11-2*4=11-8=34) x-2y=11 x-2(2x-5)=11 x-4x+10=11 3x = - 1x = - 1/3y = 2x - 5 y=-2/3-5=-17/3x = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 3 + 2y x=3+2*(-1)=3-2-13) y = 11 - 2x5x - 4y = 8 5x - 4(11 - 2x) = 8 5x - 44 + 8x = 813x = 44 + 8 13x = 52 x = 4 y=11-2*4=11-8=34) x-2y=11 x-2(2x-5)=11 x-4x+10=11 3x = - 1x = - 1/3y = 2x - 5 y=-2/3-5=-17/35)y=2-4x 8x = 5 - 3y 8x-5-3(2-4x) 8x = 5 - 6 + 12xx = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 3 + 2y x=3+2*(-1)=3-2-13) y = 11 - 2x5x - 4y = 8 5x - 4(11 - 2x) = 8 5x - 44 + 8x = 813x = 44 + 8 13x = 52 x = 4 y=11-2*4=11-8=34) x-2y=11 x-2(2x-5)=11 x-4x+10=11 3x = - 1x = - 1/3y = 2x - 5 y=-2/3-5=-17/35)y=2-4x 8x = 5 - 3y 8x-5-3(2-4x) 8x = 5 - 6 + 12x4x 1 x=1/4 y=-2-4*1/4=2-1 6) 3x - 5y = 8 - 3y - 5y = 8 y=-1 x=1x = 2 + y3x - 2y = 9 3*(2+y)-2y=9 6 + 3y - 2y = 9 y=9-6 y=3 x=2+3=52) 5x+y=4 5*(3+2y)+y=4 15+10y+y=4 11y=-11 y=-1x = 3 + 2y x=3+2*(-1)=3-2-13) y = 11 - 2x5x - 4y = 8 5x - 4(11 - 2x) = 8 5x - 44 + 8x = 813x = 44 + 8 13x = 52 x = 4 y=11-2*4=11-8=34) x-2y=11 x-2(2x-5)=11 x-4x+10=11 3x = - 1x = - 1/3y = 2x - 5 y=-2/3-5=-17/35)y=2-4x 8x = 5 - 3y 8x-5-3(2-4x) 8x = 5 - 6 + 12x4x 1 x=1/4 y=-2-4*1/4=2-1 6) 3x - 5y = 8 - 3y - 5y = 8 y=-1 x=1x=-y