3n-20=7

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Solution for 3n-20=7 equation: 


Simplifying
3n + -20 = 7

Reorder the terms:
-20 + 3n = 7

Solving
-20 + 3n = 7

Solving for variable 'n'.

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

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

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

Combine like terms: 7 + 20 = 27
3n = 27

Divide each side by '3'.
n = 9

Simplifying
n = 9

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