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8v+1-7v-1=7-\left(v-1\right)+4v+4
Add -5 and 6 to get 1.
v+1-1=7-\left(v-1\right)+4v+4
Combine 8v and -7v to get v.
v=7-\left(v-1\right)+4v+4
Subtract 1 from 1 to get 0.
v=7-v-\left(-1\right)+4v+4
To find the opposite of v-1, find the opposite of each term.
v=7-v+1+4v+4
The opposite of -1 is 1.
v=8-v+4v+4
Add 7 and 1 to get 8.
v=8+3v+4
Combine -v and 4v to get 3v.
v=12+3v
Add 8 and 4 to get 12.
v-3v=12
Subtract 3v from both sides.
-2v=12
Combine v and -3v to get -2v.
v=\frac{12}{-2}
Divide both sides by -2.
v=-6
Divide 12 by -2 to get -6.