-6n+21=2n-15

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Solution for -6n+21=2n-15 equation:


Simplifying
-6n + 21 = 2n + -15

Reorder the terms:
21 + -6n = 2n + -15

Reorder the terms:
21 + -6n = -15 + 2n

Solving
21 + -6n = -15 + 2n

Solving for variable 'n'.

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

Add '-2n' to each side of the equation.
21 + -6n + -2n = -15 + 2n + -2n

Combine like terms: -6n + -2n = -8n
21 + -8n = -15 + 2n + -2n

Combine like terms: 2n + -2n = 0
21 + -8n = -15 + 0
21 + -8n = -15

Add '-21' to each side of the equation.
21 + -21 + -8n = -15 + -21

Combine like terms: 21 + -21 = 0
0 + -8n = -15 + -21
-8n = -15 + -21

Combine like terms: -15 + -21 = -36
-8n = -36

Divide each side by '-8'.
n = 4.5

Simplifying
n = 4.5

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