3n+6-7n=33-12n+21

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Solution for 3n+6-7n=33-12n+21 equation:


Simplifying
3n + 6 + -7n = 33 + -12n + 21

Reorder the terms:
6 + 3n + -7n = 33 + -12n + 21

Combine like terms: 3n + -7n = -4n
6 + -4n = 33 + -12n + 21

Reorder the terms:
6 + -4n = 33 + 21 + -12n

Combine like terms: 33 + 21 = 54
6 + -4n = 54 + -12n

Solving
6 + -4n = 54 + -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.
6 + -4n + 12n = 54 + -12n + 12n

Combine like terms: -4n + 12n = 8n
6 + 8n = 54 + -12n + 12n

Combine like terms: -12n + 12n = 0
6 + 8n = 54 + 0
6 + 8n = 54

Add '-6' to each side of the equation.
6 + -6 + 8n = 54 + -6

Combine like terms: 6 + -6 = 0
0 + 8n = 54 + -6
8n = 54 + -6

Combine like terms: 54 + -6 = 48
8n = 48

Divide each side by '8'.
n = 6

Simplifying
n = 6

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