87=3-7v

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Solution for 87=3-7v equation:


Simplifying
87 = 3 + -7v

Solving
87 = 3 + -7v

Solving for variable 'v'.

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

Add '7v' to each side of the equation.
87 + 7v = 3 + -7v + 7v

Combine like terms: -7v + 7v = 0
87 + 7v = 3 + 0
87 + 7v = 3

Add '-87' to each side of the equation.
87 + -87 + 7v = 3 + -87

Combine like terms: 87 + -87 = 0
0 + 7v = 3 + -87
7v = 3 + -87

Combine like terms: 3 + -87 = -84
7v = -84

Divide each side by '7'.
v = -12

Simplifying
v = -12

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