-3(2n+6)=-3n-21

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Solution for -3(2n+6)=-3n-21 equation: 


Simplifying
-3(2n + 6) = -3n + -21

Reorder the terms:
-3(6 + 2n) = -3n + -21
(6 * -3 + 2n * -3) = -3n + -21
(-18 + -6n) = -3n + -21

Reorder the terms:
-18 + -6n = -21 + -3n

Solving
-18 + -6n = -21 + -3n

Solving for variable 'n'.

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

Add '3n' to each side of the equation.
-18 + -6n + 3n = -21 + -3n + 3n

Combine like terms: -6n + 3n = -3n
-18 + -3n = -21 + -3n + 3n

Combine like terms: -3n + 3n = 0
-18 + -3n = -21 + 0
-18 + -3n = -21

Add '18' to each side of the equation.
-18 + 18 + -3n = -21 + 18

Combine like terms: -18 + 18 = 0
0 + -3n = -21 + 18
-3n = -21 + 18

Combine like terms: -21 + 18 = -3
-3n = -3

Divide each side by '-3'.
n = 1

Simplifying
n = 1

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