8n+4(n-9)=-78

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Solution for 8n+4(n-9)=-78 equation:


Simplifying
8n + 4(n + -9) = -78

Reorder the terms:
8n + 4(-9 + n) = -78
8n + (-9 * 4 + n * 4) = -78
8n + (-36 + 4n) = -78

Reorder the terms:
-36 + 8n + 4n = -78

Combine like terms: 8n + 4n = 12n
-36 + 12n = -78

Solving
-36 + 12n = -78

Solving for variable 'n'.

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

Add '36' to each side of the equation.
-36 + 36 + 12n = -78 + 36

Combine like terms: -36 + 36 = 0
0 + 12n = -78 + 36
12n = -78 + 36

Combine like terms: -78 + 36 = -42
12n = -42

Divide each side by '12'.
n = -3.5

Simplifying
n = -3.5

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