120-x=309

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Solution for 120-x=309 equation: 


Simplifying
120 + -1x = 309

Solving
120 + -1x = 309

Solving for variable 'x'.

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

Add '-120' to each side of the equation.
120 + -120 + -1x = 309 + -120

Combine like terms: 120 + -120 = 0
0 + -1x = 309 + -120
-1x = 309 + -120

Combine like terms: 309 + -120 = 189
-1x = 189

Divide each side by '-1'.
x = -189

Simplifying
x = -189

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