-90=18-12v

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Solution for -90=18-12v equation:


Simplifying
-90 = 18 + -12v

Solving
-90 = 18 + -12v

Solving for variable 'v'.

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

Add '12v' to each side of the equation.
-90 + 12v = 18 + -12v + 12v

Combine like terms: -12v + 12v = 0
-90 + 12v = 18 + 0
-90 + 12v = 18

Add '90' to each side of the equation.
-90 + 90 + 12v = 18 + 90

Combine like terms: -90 + 90 = 0
0 + 12v = 18 + 90
12v = 18 + 90

Combine like terms: 18 + 90 = 108
12v = 108

Divide each side by '12'.
v = 9

Simplifying
v = 9

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