-84=-7(v-3)-8v

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Solution for -84=-7(v-3)-8v equation:


Simplifying
-84 = -7(v + -3) + -8v

Reorder the terms:
-84 = -7(-3 + v) + -8v
-84 = (-3 * -7 + v * -7) + -8v
-84 = (21 + -7v) + -8v

Combine like terms: -7v + -8v = -15v
-84 = 21 + -15v

Solving
-84 = 21 + -15v

Solving for variable 'v'.

Move all terms containing v to the left, all other terms to the right.

Add '15v' to each side of the equation.
-84 + 15v = 21 + -15v + 15v

Combine like terms: -15v + 15v = 0
-84 + 15v = 21 + 0
-84 + 15v = 21

Add '84' to each side of the equation.
-84 + 84 + 15v = 21 + 84

Combine like terms: -84 + 84 = 0
0 + 15v = 21 + 84
15v = 21 + 84

Combine like terms: 21 + 84 = 105
15v = 105

Divide each side by '15'.
v = 7

Simplifying
v = 7

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