20=11-9x

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Solution for 20=11-9x equation:


Simplifying
20 = 11 + -9x

Solving
20 = 11 + -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.
20 + 9x = 11 + -9x + 9x

Combine like terms: -9x + 9x = 0
20 + 9x = 11 + 0
20 + 9x = 11

Add '-20' to each side of the equation.
20 + -20 + 9x = 11 + -20

Combine like terms: 20 + -20 = 0
0 + 9x = 11 + -20
9x = 11 + -20

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

Divide each side by '9'.
x = -1

Simplifying
x = -1

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