Пошаговое объяснение:
1) 3.2x+6 1/5=10;
3.2x=10-6.2;
3.2x=3.8;
x=1.1875.
***
2) 0.4x-2 1/6 = 4;
0.4x=4+2 1/6;
0.4x = 6 1/6;
x= 37/6 : 2/5
x=37/6*5/2;
x= 185/12;
x=15 5/12.
3) 1 1/3x -2.7 =6;
1 1/3x=6+2.7;
1 1/3x = 8.7;
x= 8.7 : 4/3;
x=8.7 *3/4;
x= 6.525.
Пошаговое объяснение:
1) 3.2x+6 1/5=10;
3.2x=10-6.2;
3.2x=3.8;
x=1.1875.
***
2) 0.4x-2 1/6 = 4;
0.4x=4+2 1/6;
0.4x = 6 1/6;
x= 37/6 : 2/5
x=37/6*5/2;
x= 185/12;
x=15 5/12.
***
3) 1 1/3x -2.7 =6;
1 1/3x=6+2.7;
1 1/3x = 8.7;
x= 8.7 : 4/3;
x=8.7 *3/4;
x= 6.525.