7(-1+7v)=140

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Solution for 7(-1+7v)=140 equation: 



7(-1+7v)=140

We move all terms to the left:

7(-1+7v)-(140)=0

We add all the numbers together, and all the variables

7(7v-1)-140=0

We multiply parentheses

49v-7-140=0

We add all the numbers together, and all the variables

49v-147=0

We move all terms containing v to the left, all other terms to the right

49v=147

v=147/49

v=3

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