2*n-(n-7)=12

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


Simplifying
2n + -1(n + -7) = 12

Reorder the terms:
2n + -1(-7 + n) = 12
2n + (-7 * -1 + n * -1) = 12
2n + (7 + -1n) = 12

Reorder the terms:
7 + 2n + -1n = 12

Combine like terms: 2n + -1n = 1n
7 + 1n = 12

Solving
7 + 1n = 12

Solving for variable 'n'.

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

Add '-7' to each side of the equation.
7 + -7 + 1n = 12 + -7

Combine like terms: 7 + -7 = 0
0 + 1n = 12 + -7
1n = 12 + -7

Combine like terms: 12 + -7 = 5
1n = 5

Divide each side by '1'.
n = 5

Simplifying
n = 5

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