n-3+8n=-21

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Solution for n-3+8n=-21 equation:


Simplifying
n + -3 + 8n = -21

Reorder the terms:
-3 + n + 8n = -21

Combine like terms: n + 8n = 9n
-3 + 9n = -21

Solving
-3 + 9n = -21

Solving for variable 'n'.

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

Add '3' to each side of the equation.
-3 + 3 + 9n = -21 + 3

Combine like terms: -3 + 3 = 0
0 + 9n = -21 + 3
9n = -21 + 3

Combine like terms: -21 + 3 = -18
9n = -18

Divide each side by '9'.
n = -2

Simplifying
n = -2

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