7n-12=3n-20

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Solution for 7n-12=3n-20 equation:


Simplifying
7n + -12 = 3n + -20

Reorder the terms:
-12 + 7n = 3n + -20

Reorder the terms:
-12 + 7n = -20 + 3n

Solving
-12 + 7n = -20 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
-12 + 7n + -3n = -20 + 3n + -3n

Combine like terms: 7n + -3n = 4n
-12 + 4n = -20 + 3n + -3n

Combine like terms: 3n + -3n = 0
-12 + 4n = -20 + 0
-12 + 4n = -20

Add '12' to each side of the equation.
-12 + 12 + 4n = -20 + 12

Combine like terms: -12 + 12 = 0
0 + 4n = -20 + 12
4n = -20 + 12

Combine like terms: -20 + 12 = -8
4n = -8

Divide each side by '4'.
n = -2

Simplifying
n = -2

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