9-x=-20

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Solution for 9-x=-20 equation: 


Simplifying
9 + -1x = -20

Solving
9 + -1x = -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 + -1x = -20 + -9

Combine like terms: 9 + -9 = 0
0 + -1x = -20 + -9
-1x = -20 + -9

Combine like terms: -20 + -9 = -29
-1x = -29

Divide each side by '-1'.
x = 29

Simplifying
x = 29

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