13=v+-7

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Solution for 13=v+-7 equation:


Simplifying
13 = v + -7

Reorder the terms:
13 = -7 + v

Solving
13 = -7 + v

Solving for variable 'v'.

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

Add '-1v' to each side of the equation.
13 + -1v = -7 + v + -1v

Combine like terms: v + -1v = 0
13 + -1v = -7 + 0
13 + -1v = -7

Add '-13' to each side of the equation.
13 + -13 + -1v = -7 + -13

Combine like terms: 13 + -13 = 0
0 + -1v = -7 + -13
-1v = -7 + -13

Combine like terms: -7 + -13 = -20
-1v = -20

Divide each side by '-1'.
v = 20

Simplifying
v = 20

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