(90-n)+(180-n)=144

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Solution for (90-n)+(180-n)=144 equation:


Simplifying
(90 + -1n) + (180 + -1n) = 144

Remove parenthesis around (90 + -1n)
90 + -1n + (180 + -1n) = 144

Remove parenthesis around (180 + -1n)
90 + -1n + 180 + -1n = 144

Reorder the terms:
90 + 180 + -1n + -1n = 144

Combine like terms: 90 + 180 = 270
270 + -1n + -1n = 144

Combine like terms: -1n + -1n = -2n
270 + -2n = 144

Solving
270 + -2n = 144

Solving for variable 'n'.

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

Add '-270' to each side of the equation.
270 + -270 + -2n = 144 + -270

Combine like terms: 270 + -270 = 0
0 + -2n = 144 + -270
-2n = 144 + -270

Combine like terms: 144 + -270 = -126
-2n = -126

Divide each side by '-2'.
n = 63

Simplifying
n = 63

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