3n-4+3n=20

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Solution for 3n-4+3n=20 equation: 


Simplifying
3n + -4 + 3n = 20

Reorder the terms:
-4 + 3n + 3n = 20

Combine like terms: 3n + 3n = 6n
-4 + 6n = 20

Solving
-4 + 6n = 20

Solving for variable 'n'.

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

Add '4' to each side of the equation.
-4 + 4 + 6n = 20 + 4

Combine like terms: -4 + 4 = 0
0 + 6n = 20 + 4
6n = 20 + 4

Combine like terms: 20 + 4 = 24
6n = 24

Divide each side by '6'.
n = 4

Simplifying
n = 4

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