3n+7=21+6n

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Solution for 3n+7=21+6n equation:


Simplifying
3n + 7 = 21 + 6n

Reorder the terms:
7 + 3n = 21 + 6n

Solving
7 + 3n = 21 + 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.
7 + 3n + -6n = 21 + 6n + -6n

Combine like terms: 3n + -6n = -3n
7 + -3n = 21 + 6n + -6n

Combine like terms: 6n + -6n = 0
7 + -3n = 21 + 0
7 + -3n = 21

Add '-7' to each side of the equation.
7 + -7 + -3n = 21 + -7

Combine like terms: 7 + -7 = 0
0 + -3n = 21 + -7
-3n = 21 + -7

Combine like terms: 21 + -7 = 14
-3n = 14

Divide each side by '-3'.
n = -4.666666667

Simplifying
n = -4.666666667

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