20-11=9x+99

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Solution for 20-11=9x+99 equation:


Simplifying
20 + -11 = 9x + 99

Combine like terms: 20 + -11 = 9
9 = 9x + 99

Reorder the terms:
9 = 99 + 9x

Solving
9 = 99 + 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.
9 + -9x = 99 + 9x + -9x

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

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

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

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

Divide each side by '-9'.
x = -10

Simplifying
x = -10

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