9-2x=72

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Solution for 9-2x=72 equation: 


Simplifying
9 + -2x = 72

Solving
9 + -2x = 72

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 + -2x = 72 + -9

Combine like terms: 9 + -9 = 0
0 + -2x = 72 + -9
-2x = 72 + -9

Combine like terms: 72 + -9 = 63
-2x = 63

Divide each side by '-2'.
x = -31.5

Simplifying
x = -31.5

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