x-9=(-20)

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


Simplifying
x + -9 = (-20)

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

Solving
-9 + x = -20

Solving for variable 'x'.

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

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

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

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

Simplifying
x = -11

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