7n-57=20

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Solution for 7n-57=20 equation: 


Simplifying
7n + -57 = 20

Reorder the terms:
-57 + 7n = 20

Solving
-57 + 7n = 20

Solving for variable 'n'.

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

Add '57' to each side of the equation.
-57 + 57 + 7n = 20 + 57

Combine like terms: -57 + 57 = 0
0 + 7n = 20 + 57
7n = 20 + 57

Combine like terms: 20 + 57 = 77
7n = 77

Divide each side by '7'.
n = 11

Simplifying
n = 11

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