-3(2n-5)=21

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Solution for -3(2n-5)=21 equation: 


Simplifying
-3(2n + -5) = 21

Reorder the terms:
-3(-5 + 2n) = 21
(-5 * -3 + 2n * -3) = 21
(15 + -6n) = 21

Solving
15 + -6n = 21

Solving for variable 'n'.

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

Add '-15' to each side of the equation.
15 + -15 + -6n = 21 + -15

Combine like terms: 15 + -15 = 0
0 + -6n = 21 + -15
-6n = 21 + -15

Combine like terms: 21 + -15 = 6
-6n = 6

Divide each side by '-6'.
n = -1

Simplifying
n = -1

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