8-4n+5=21

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Solution for 8-4n+5=21 equation:


Simplifying
8 + -4n + 5 = 21

Reorder the terms:
8 + 5 + -4n = 21

Combine like terms: 8 + 5 = 13
13 + -4n = 21

Solving
13 + -4n = 21

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 + -4n = 21 + -13

Combine like terms: 13 + -13 = 0
0 + -4n = 21 + -13
-4n = 21 + -13

Combine like terms: 21 + -13 = 8
-4n = 8

Divide each side by '-4'.
n = -2

Simplifying
n = -2

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