31=5-2x

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Solution for 31=5-2x equation: 


Simplifying
31 = 5 + -2x

Solving
31 = 5 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
31 + 2x = 5 + -2x + 2x

Combine like terms: -2x + 2x = 0
31 + 2x = 5 + 0
31 + 2x = 5

Add '-31' to each side of the equation.
31 + -31 + 2x = 5 + -31

Combine like terms: 31 + -31 = 0
0 + 2x = 5 + -31
2x = 5 + -31

Combine like terms: 5 + -31 = -26
2x = -26

Divide each side by '2'.
x = -13

Simplifying
x = -13

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