8n-9=3(4n+5)

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Solution for 8n-9=3(4n+5) equation:


Simplifying
8n + -9 = 3(4n + 5)

Reorder the terms:
-9 + 8n = 3(4n + 5)

Reorder the terms:
-9 + 8n = 3(5 + 4n)
-9 + 8n = (5 * 3 + 4n * 3)
-9 + 8n = (15 + 12n)

Solving
-9 + 8n = 15 + 12n

Solving for variable 'n'.

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

Add '-12n' to each side of the equation.
-9 + 8n + -12n = 15 + 12n + -12n

Combine like terms: 8n + -12n = -4n
-9 + -4n = 15 + 12n + -12n

Combine like terms: 12n + -12n = 0
-9 + -4n = 15 + 0
-9 + -4n = 15

Add '9' to each side of the equation.
-9 + 9 + -4n = 15 + 9

Combine like terms: -9 + 9 = 0
0 + -4n = 15 + 9
-4n = 15 + 9

Combine like terms: 15 + 9 = 24
-4n = 24

Divide each side by '-4'.
n = -6

Simplifying
n = -6

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