-9+7+x=20

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Solution for -9+7+x=20 equation: 


Simplifying
-9 + 7 + x = 20

Combine like terms: -9 + 7 = -2
-2 + x = 20

Solving
-2 + x = 20

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + x = 20 + 2

Combine like terms: -2 + 2 = 0
0 + x = 20 + 2
x = 20 + 2

Combine like terms: 20 + 2 = 22
x = 22

Simplifying
x = 22

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