3n+18=39-4n

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Solution for 3n+18=39-4n equation:


Simplifying
3n + 18 = 39 + -4n

Reorder the terms:
18 + 3n = 39 + -4n

Solving
18 + 3n = 39 + -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.
18 + 3n + 4n = 39 + -4n + 4n

Combine like terms: 3n + 4n = 7n
18 + 7n = 39 + -4n + 4n

Combine like terms: -4n + 4n = 0
18 + 7n = 39 + 0
18 + 7n = 39

Add '-18' to each side of the equation.
18 + -18 + 7n = 39 + -18

Combine like terms: 18 + -18 = 0
0 + 7n = 39 + -18
7n = 39 + -18

Combine like terms: 39 + -18 = 21
7n = 21

Divide each side by '7'.
n = 3

Simplifying
n = 3

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