2n+18=90

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Solution for 2n+18=90 equation: 


Simplifying
2n + 18 = 90

Reorder the terms:
18 + 2n = 90

Solving
18 + 2n = 90

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 + 2n = 90 + -18

Combine like terms: 18 + -18 = 0
0 + 2n = 90 + -18
2n = 90 + -18

Combine like terms: 90 + -18 = 72
2n = 72

Divide each side by '2'.
n = 36

Simplifying
n = 36

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