9(-1-x)=72

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Solution for 9(-1-x)=72 equation: 


Simplifying
9(-1 + -1x) = 72
(-1 * 9 + -1x * 9) = 72
(-9 + -9x) = 72

Solving
-9 + -9x = 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 + -9x = 72 + 9

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

Combine like terms: 72 + 9 = 81
-9x = 81

Divide each side by '-9'.
x = -9

Simplifying
x = -9

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