Question

1) 3(х-2)=4х
2) 3 (2х-7)=9

Answer 1

1)3x -6 =4x
3x-4x =6
-x=6
x=-6
2) 6x-21=9
6x=30
x=5

Answer 2

1)3х-6=4х;
   -х=6;
    х=-6.
2)6х-21=9;
   6х=9+21;
   6х=30;
   х=30:6;
   х=5.