-9-9=2x+13

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Solution for -9-9=2x+13 equation:


Simplifying
-9 + -9 = 2x + 13

Combine like terms: -9 + -9 = -18
-18 = 2x + 13

Reorder the terms:
-18 = 13 + 2x

Solving
-18 = 13 + 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.
-18 + -2x = 13 + 2x + -2x

Combine like terms: 2x + -2x = 0
-18 + -2x = 13 + 0
-18 + -2x = 13

Add '18' to each side of the equation.
-18 + 18 + -2x = 13 + 18

Combine like terms: -18 + 18 = 0
0 + -2x = 13 + 18
-2x = 13 + 18

Combine like terms: 13 + 18 = 31
-2x = 31

Divide each side by '-2'.
x = -15.5

Simplifying
x = -15.5

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