8n+12+3n=40+9n-57

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Solution for 8n+12+3n=40+9n-57 equation:


Simplifying
8n + 12 + 3n = 40 + 9n + -57

Reorder the terms:
12 + 8n + 3n = 40 + 9n + -57

Combine like terms: 8n + 3n = 11n
12 + 11n = 40 + 9n + -57

Reorder the terms:
12 + 11n = 40 + -57 + 9n

Combine like terms: 40 + -57 = -17
12 + 11n = -17 + 9n

Solving
12 + 11n = -17 + 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.
12 + 11n + -9n = -17 + 9n + -9n

Combine like terms: 11n + -9n = 2n
12 + 2n = -17 + 9n + -9n

Combine like terms: 9n + -9n = 0
12 + 2n = -17 + 0
12 + 2n = -17

Add '-12' to each side of the equation.
12 + -12 + 2n = -17 + -12

Combine like terms: 12 + -12 = 0
0 + 2n = -17 + -12
2n = -17 + -12

Combine like terms: -17 + -12 = -29
2n = -29

Divide each side by '2'.
n = -14.5

Simplifying
n = -14.5

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