3n-12-2n=-42

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Solution for 3n-12-2n=-42 equation:


Simplifying
3n + -12 + -2n = -42

Reorder the terms:
-12 + 3n + -2n = -42

Combine like terms: 3n + -2n = 1n
-12 + 1n = -42

Solving
-12 + 1n = -42

Solving for variable 'n'.

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

Add '12' to each side of the equation.
-12 + 12 + 1n = -42 + 12

Combine like terms: -12 + 12 = 0
0 + 1n = -42 + 12
1n = -42 + 12

Combine like terms: -42 + 12 = -30
1n = -30

Divide each side by '1'.
n = -30

Simplifying
n = -30

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