-6n+21=3(7-3n)

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Solution for -6n+21=3(7-3n) equation:


Simplifying
-6n + 21 = 3(7 + -3n)

Reorder the terms:
21 + -6n = 3(7 + -3n)
21 + -6n = (7 * 3 + -3n * 3)
21 + -6n = (21 + -9n)

Add '-21' to each side of the equation.
21 + -21 + -6n = 21 + -21 + -9n

Combine like terms: 21 + -21 = 0
0 + -6n = 21 + -21 + -9n
-6n = 21 + -21 + -9n

Combine like terms: 21 + -21 = 0
-6n = 0 + -9n
-6n = -9n

Solving
-6n = -9n

Solving for variable 'n'.

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

Add '9n' to each side of the equation.
-6n + 9n = -9n + 9n

Combine like terms: -6n + 9n = 3n
3n = -9n + 9n

Combine like terms: -9n + 9n = 0
3n = 0

Divide each side by '3'.
n = 0

Simplifying
n = 0

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