4-7n+8=-9

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Solution for 4-7n+8=-9 equation:


Simplifying
4 + -7n + 8 = -9

Reorder the terms:
4 + 8 + -7n = -9

Combine like terms: 4 + 8 = 12
12 + -7n = -9

Solving
12 + -7n = -9

Solving for variable 'n'.

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

Add '-12' to each side of the equation.
12 + -12 + -7n = -9 + -12

Combine like terms: 12 + -12 = 0
0 + -7n = -9 + -12
-7n = -9 + -12

Combine like terms: -9 + -12 = -21
-7n = -21

Divide each side by '-7'.
n = 3

Simplifying
n = 3

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