5n+30-7n=20

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Solution for 5n+30-7n=20 equation: 


Simplifying
5n + 30 + -7n = 20

Reorder the terms:
30 + 5n + -7n = 20

Combine like terms: 5n + -7n = -2n
30 + -2n = 20

Solving
30 + -2n = 20

Solving for variable 'n'.

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

Add '-30' to each side of the equation.
30 + -30 + -2n = 20 + -30

Combine like terms: 30 + -30 = 0
0 + -2n = 20 + -30
-2n = 20 + -30

Combine like terms: 20 + -30 = -10
-2n = -10

Divide each side by '-2'.
n = 5

Simplifying
n = 5

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