31=9+2x

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Solution for 31=9+2x equation:


Simplifying
31 = 9 + 2x

Solving
31 = 9 + 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 = 9 + 2x + -2x

Combine like terms: 2x + -2x = 0
31 + -2x = 9 + 0
31 + -2x = 9

Add '-31' to each side of the equation.
31 + -31 + -2x = 9 + -31

Combine like terms: 31 + -31 = 0
0 + -2x = 9 + -31
-2x = 9 + -31

Combine like terms: 9 + -31 = -22
-2x = -22

Divide each side by '-2'.
x = 11

Simplifying
x = 11

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