-20=10(x-9)

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Solution for -20=10(x-9) equation:


Simplifying
-20 = 10(x + -9)

Reorder the terms:
-20 = 10(-9 + x)
-20 = (-9 * 10 + x * 10)
-20 = (-90 + 10x)

Solving
-20 = -90 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
-20 + -10x = -90 + 10x + -10x

Combine like terms: 10x + -10x = 0
-20 + -10x = -90 + 0
-20 + -10x = -90

Add '20' to each side of the equation.
-20 + 20 + -10x = -90 + 20

Combine like terms: -20 + 20 = 0
0 + -10x = -90 + 20
-10x = -90 + 20

Combine like terms: -90 + 20 = -70
-10x = -70

Divide each side by '-10'.
x = 7

Simplifying
x = 7

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