2(9-2n)=72

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


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

Solving
18 + -4n = 72

Solving for variable 'n'.

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

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

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

Combine like terms: 72 + -18 = 54
-4n = 54

Divide each side by '-4'.
n = -13.5

Simplifying
n = -13.5

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