9+3n-7=9n+12-4n

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Solution for 9+3n-7=9n+12-4n equation:


Simplifying
9 + 3n + -7 = 9n + 12 + -4n

Reorder the terms:
9 + -7 + 3n = 9n + 12 + -4n

Combine like terms: 9 + -7 = 2
2 + 3n = 9n + 12 + -4n

Reorder the terms:
2 + 3n = 12 + 9n + -4n

Combine like terms: 9n + -4n = 5n
2 + 3n = 12 + 5n

Solving
2 + 3n = 12 + 5n

Solving for variable 'n'.

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

Add '-5n' to each side of the equation.
2 + 3n + -5n = 12 + 5n + -5n

Combine like terms: 3n + -5n = -2n
2 + -2n = 12 + 5n + -5n

Combine like terms: 5n + -5n = 0
2 + -2n = 12 + 0
2 + -2n = 12

Add '-2' to each side of the equation.
2 + -2 + -2n = 12 + -2

Combine like terms: 2 + -2 = 0
0 + -2n = 12 + -2
-2n = 12 + -2

Combine like terms: 12 + -2 = 10
-2n = 10

Divide each side by '-2'.
n = -5

Simplifying
n = -5

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