8-7n-21=85

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Solution for 8-7n-21=85 equation:


Simplifying
8 + -7n + -21 = 85

Reorder the terms:
8 + -21 + -7n = 85

Combine like terms: 8 + -21 = -13
-13 + -7n = 85

Solving
-13 + -7n = 85

Solving for variable 'n'.

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

Add '13' to each side of the equation.
-13 + 13 + -7n = 85 + 13

Combine like terms: -13 + 13 = 0
0 + -7n = 85 + 13
-7n = 85 + 13

Combine like terms: 85 + 13 = 98
-7n = 98

Divide each side by '-7'.
n = -14

Simplifying
n = -14

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