-3(5n-7)=81

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Solution for -3(5n-7)=81 equation: 


Simplifying
-3(5n + -7) = 81

Reorder the terms:
-3(-7 + 5n) = 81
(-7 * -3 + 5n * -3) = 81
(21 + -15n) = 81

Solving
21 + -15n = 81

Solving for variable 'n'.

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

Add '-21' to each side of the equation.
21 + -21 + -15n = 81 + -21

Combine like terms: 21 + -21 = 0
0 + -15n = 81 + -21
-15n = 81 + -21

Combine like terms: 81 + -21 = 60
-15n = 60

Divide each side by '-15'.
n = -4

Simplifying
n = -4

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