6n+21=12n+15

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Solution for 6n+21=12n+15 equation:


Simplifying
6n + 21 = 12n + 15

Reorder the terms:
21 + 6n = 12n + 15

Reorder the terms:
21 + 6n = 15 + 12n

Solving
21 + 6n = 15 + 12n

Solving for variable 'n'.

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

Add '-12n' to each side of the equation.
21 + 6n + -12n = 15 + 12n + -12n

Combine like terms: 6n + -12n = -6n
21 + -6n = 15 + 12n + -12n

Combine like terms: 12n + -12n = 0
21 + -6n = 15 + 0
21 + -6n = 15

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

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

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

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

Simplifying
n = 1

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