81=5v-9

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Solution for 81=5v-9 equation:


Simplifying
81 = 5v + -9

Reorder the terms:
81 = -9 + 5v

Solving
81 = -9 + 5v

Solving for variable 'v'.

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

Add '-5v' to each side of the equation.
81 + -5v = -9 + 5v + -5v

Combine like terms: 5v + -5v = 0
81 + -5v = -9 + 0
81 + -5v = -9

Add '-81' to each side of the equation.
81 + -81 + -5v = -9 + -81

Combine like terms: 81 + -81 = 0
0 + -5v = -9 + -81
-5v = -9 + -81

Combine like terms: -9 + -81 = -90
-5v = -90

Divide each side by '-5'.
v = 18

Simplifying
v = 18

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