8n-(3n-12)=42

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Solution for 8n-(3n-12)=42 equation:


Simplifying
8n + -1(3n + -12) = 42

Reorder the terms:
8n + -1(-12 + 3n) = 42
8n + (-12 * -1 + 3n * -1) = 42
8n + (12 + -3n) = 42

Reorder the terms:
12 + 8n + -3n = 42

Combine like terms: 8n + -3n = 5n
12 + 5n = 42

Solving
12 + 5n = 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 + 5n = 42 + -12

Combine like terms: 12 + -12 = 0
0 + 5n = 42 + -12
5n = 42 + -12

Combine like terms: 42 + -12 = 30
5n = 30

Divide each side by '5'.
n = 6

Simplifying
n = 6

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