-90-9=9x+18

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Solution for -90-9=9x+18 equation:


Simplifying
-90 + -9 = 9x + 18

Combine like terms: -90 + -9 = -99
-99 = 9x + 18

Reorder the terms:
-99 = 18 + 9x

Solving
-99 = 18 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-99 + -9x = 18 + 9x + -9x

Combine like terms: 9x + -9x = 0
-99 + -9x = 18 + 0
-99 + -9x = 18

Add '99' to each side of the equation.
-99 + 99 + -9x = 18 + 99

Combine like terms: -99 + 99 = 0
0 + -9x = 18 + 99
-9x = 18 + 99

Combine like terms: 18 + 99 = 117
-9x = 117

Divide each side by '-9'.
x = -13

Simplifying
x = -13

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