31-19=2(x-9)

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Solution for 31-19=2(x-9) equation:


Simplifying
31 + -19 = 2(x + -9)

Combine like terms: 31 + -19 = 12
12 = 2(x + -9)

Reorder the terms:
12 = 2(-9 + x)
12 = (-9 * 2 + x * 2)
12 = (-18 + 2x)

Solving
12 = -18 + 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.
12 + -2x = -18 + 2x + -2x

Combine like terms: 2x + -2x = 0
12 + -2x = -18 + 0
12 + -2x = -18

Add '-12' to each side of the equation.
12 + -12 + -2x = -18 + -12

Combine like terms: 12 + -12 = 0
0 + -2x = -18 + -12
-2x = -18 + -12

Combine like terms: -18 + -12 = -30
-2x = -30

Divide each side by '-2'.
x = 15

Simplifying
x = 15

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