-6+21=n-15

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


Simplifying
-6 + 21 = n + -15

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

Reorder the terms:
15 = -15 + n

Solving
15 = -15 + n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
15 + -1n = -15 + n + -1n

Combine like terms: n + -1n = 0
15 + -1n = -15 + 0
15 + -1n = -15

Add '-15' to each side of the equation.
15 + -15 + -1n = -15 + -15

Combine like terms: 15 + -15 = 0
0 + -1n = -15 + -15
-1n = -15 + -15

Combine like terms: -15 + -15 = -30
-1n = -30

Divide each side by '-1'.
n = 30

Simplifying
n = 30

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