8=8v-4(v+8)

8 = 8v - 4(v + 8)

Now multiply - 4 in the bracket which will also change the signs in the bracket terms , then

8 = 8v - 4v - 32

Now

8 = 4v - 32

Now add 32 on both sides, we get

8 + 32 = 4v - 32 + 32

40 = 4v

Now divide by 4 on both sides ,we get

40/4 = 4v/4

10 = v

Hence v = 10

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