31=4-9v

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Solution for 31=4-9v equation:


Simplifying
31 = 4 + -9v

Solving
31 = 4 + -9v

Solving for variable 'v'.

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

Add '9v' to each side of the equation.
31 + 9v = 4 + -9v + 9v

Combine like terms: -9v + 9v = 0
31 + 9v = 4 + 0
31 + 9v = 4

Add '-31' to each side of the equation.
31 + -31 + 9v = 4 + -31

Combine like terms: 31 + -31 = 0
0 + 9v = 4 + -31
9v = 4 + -31

Combine like terms: 4 + -31 = -27
9v = -27

Divide each side by '9'.
v = -3

Simplifying
v = -3

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