3n+18-n=40

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Solution for 3n+18-n=40 equation:


Simplifying
3n + 18 + -1n = 40

Reorder the terms:
18 + 3n + -1n = 40

Combine like terms: 3n + -1n = 2n
18 + 2n = 40

Solving
18 + 2n = 40

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 = 40 + -18

Combine like terms: 18 + -18 = 0
0 + 2n = 40 + -18
2n = 40 + -18

Combine like terms: 40 + -18 = 22
2n = 22

Divide each side by '2'.
n = 11

Simplifying
n = 11

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