3n+15=8n-9

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Solution for 3n+15=8n-9 equation:


Simplifying
3n + 15 = 8n + -9

Reorder the terms:
15 + 3n = 8n + -9

Reorder the terms:
15 + 3n = -9 + 8n

Solving
15 + 3n = -9 + 8n

Solving for variable 'n'.

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

Add '-8n' to each side of the equation.
15 + 3n + -8n = -9 + 8n + -8n

Combine like terms: 3n + -8n = -5n
15 + -5n = -9 + 8n + -8n

Combine like terms: 8n + -8n = 0
15 + -5n = -9 + 0
15 + -5n = -9

Add '-15' to each side of the equation.
15 + -15 + -5n = -9 + -15

Combine like terms: 15 + -15 = 0
0 + -5n = -9 + -15
-5n = -9 + -15

Combine like terms: -9 + -15 = -24
-5n = -24

Divide each side by '-5'.
n = 4.8

Simplifying
n = 4.8

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