2n-3(n-7)=12

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Solution for 2n-3(n-7)=12 equation:


Simplifying
2n + -3(n + -7) = 12

Reorder the terms:
2n + -3(-7 + n) = 12
2n + (-7 * -3 + n * -3) = 12
2n + (21 + -3n) = 12

Reorder the terms:
21 + 2n + -3n = 12

Combine like terms: 2n + -3n = -1n
21 + -1n = 12

Solving
21 + -1n = 12

Solving for variable 'n'.

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

Add '-21' to each side of the equation.
21 + -21 + -1n = 12 + -21

Combine like terms: 21 + -21 = 0
0 + -1n = 12 + -21
-1n = 12 + -21

Combine like terms: 12 + -21 = -9
-1n = -9

Divide each side by '-1'.
n = 9

Simplifying
n = 9

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