You can put this solution on YOUR website! solve this:
-2 = 4(2+)
multiply the terms inside the brackets by 4, the denominator of v, cancels
-2 = 8 + v
-2 - 8 = v
v = -10
;
:
See if that checks out in the original problem
-2 = 4(2+)
-2 = 8 - 10
-2 = -2