72=-2(9-2n)

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Solution for 72=-2(9-2n) equation:


Simplifying
72 = -2(9 + -2n)
72 = (9 * -2 + -2n * -2)
72 = (-18 + 4n)

Solving
72 = -18 + 4n

Solving for variable 'n'.

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

Add '-4n' to each side of the equation.
72 + -4n = -18 + 4n + -4n

Combine like terms: 4n + -4n = 0
72 + -4n = -18 + 0
72 + -4n = -18

Add '-72' to each side of the equation.
72 + -72 + -4n = -18 + -72

Combine like terms: 72 + -72 = 0
0 + -4n = -18 + -72
-4n = -18 + -72

Combine like terms: -18 + -72 = -90
-4n = -90

Divide each side by '-4'.
n = 22.5

Simplifying
n = 22.5

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