1) 2(11x-5)-17x = 55; 2) 5(8x+3)-12 = 83; 3) - вопрос №121151755258312833729311443413257410073773 от маша200620 27.05.2020 10:35

Question

Математика: 1) 2(11x-5)-17x = 55; 2) 5(8x+3)-12 = 83; 3) 7(2x+9)+3x = 114; 4) 3(4x+13)-25 = 74.​

маша200620 · Answer

1) 2(11х-5)-17х=55 22х-10-935х -913х-102) 5(8х+3)-12=83 40х+15-12=83 40х+3=83 40х=83-3 40х=80 х=2 3) 7(2х+9)+3х=114 14х+63+3х=114 17х+63=114 17х=114-63 17х=51 х=3 4) 3(4х+13)-25=74 12х+39-25=74 12х+14=74 12х=74-14 12х=60 х=5 5) 6m+m-35=21 7m-35=21 7m=21+35 7m=56 m=8 6) 5n+9n+32=200 14n+32=200 14n=200-32 14n=168 n=12 7) 122:(17+х)=4 122=4(17+х) 122=68+4х -4х=68-122 -4х= -54 х=27/2, х≠17 х=13,5...

1) 2(11x-5)-17x = 55; 2) 5(8x+3)-12 = 83; 3) 7(2x+9)+3x = 114; 4) 3(4x+13)-25 = 74.​

1) 2(11x-5)-17x = 55;
2) 5(8x+3)-12 = 83;
3) 7(2x+9)+3x = 114;
4) 3(4x+13)-25 = 74.