\[7x-w=vx+y\]

Solving for w. Want to solve for x, solve for v, or solve for y instead?
1
Subtract 7x7x from both sides.
w=vx+y7x-w=vx+y-7x

2
Multiply both sides by 1-1.
w=vxy+7xw=-vx-y+7x

Done

How can we make this solution more helpful?