\[3(x-1)=2x-y\]

Solving for x. Want to solve for y instead?
1
Expand.
3x3=2xy3x-3=2x-y

2
Add 33 to both sides.
3x=2xy+33x=2x-y+3

3
Subtract 2x2x from both sides.
3x2x=y+33x-2x=-y+3

4
Simplify  3x2x3x-2x  to  xx.
x=y+3x=-y+3

5
Regroup terms.
x=3yx=3-y

Done

How can we make this solution more helpful?