9(-1+n)=72

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Solution for 9(-1+n)=72 equation: 


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

Solving
-9 + 9n = 72

Solving for variable 'n'.

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

Add '9' to each side of the equation.
-9 + 9 + 9n = 72 + 9

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

Combine like terms: 72 + 9 = 81
9n = 81

Divide each side by '9'.
n = 9

Simplifying
n = 9

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