-3n+7=20

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Solution for -3n+7=20 equation: 


Simplifying
-3n + 7 = 20

Reorder the terms:
7 + -3n = 20

Solving
7 + -3n = 20

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 + -3n = 20 + -7

Combine like terms: 7 + -7 = 0
0 + -3n = 20 + -7
-3n = 20 + -7

Combine like terms: 20 + -7 = 13
-3n = 13

Divide each side by '-3'.
n = -4.333333333

Simplifying
n = -4.333333333

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