3(n-1)=21+6n

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Solution for 3(n-1)=21+6n equation:


Simplifying
3(n + -1) = 21 + 6n

Reorder the terms:
3(-1 + n) = 21 + 6n
(-1 * 3 + n * 3) = 21 + 6n
(-3 + 3n) = 21 + 6n

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

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

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

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

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

Combine like terms: 21 + 3 = 24
-3n = 24

Divide each side by '-3'.
n = -8

Simplifying
n = -8

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