-21=-3(2n-8)

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Solution for -21=-3(2n-8) equation:


Simplifying
-21 = -3(2n + -8)

Reorder the terms:
-21 = -3(-8 + 2n)
-21 = (-8 * -3 + 2n * -3)
-21 = (24 + -6n)

Solving
-21 = 24 + -6n

Solving for variable 'n'.

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

Add '6n' to each side of the equation.
-21 + 6n = 24 + -6n + 6n

Combine like terms: -6n + 6n = 0
-21 + 6n = 24 + 0
-21 + 6n = 24

Add '21' to each side of the equation.
-21 + 21 + 6n = 24 + 21

Combine like terms: -21 + 21 = 0
0 + 6n = 24 + 21
6n = 24 + 21

Combine like terms: 24 + 21 = 45
6n = 45

Divide each side by '6'.
n = 7.5

Simplifying
n = 7.5

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