3(4-5n)=-78

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Solution for 3(4-5n)=-78 equation: 


Simplifying
3(4 + -5n) = -78
(4 * 3 + -5n * 3) = -78
(12 + -15n) = -78

Solving
12 + -15n = -78

Solving for variable 'n'.

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

Add '-12' to each side of the equation.
12 + -12 + -15n = -78 + -12

Combine like terms: 12 + -12 = 0
0 + -15n = -78 + -12
-15n = -78 + -12

Combine like terms: -78 + -12 = -90
-15n = -90

Divide each side by '-15'.
n = 6

Simplifying
n = 6

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