3n-7+2n=13

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Solution for 3n-7+2n=13 equation: 


Simplifying
3n + -7 + 2n = 13

Reorder the terms:
-7 + 3n + 2n = 13

Combine like terms: 3n + 2n = 5n
-7 + 5n = 13

Solving
-7 + 5n = 13

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 + 5n = 13 + 7

Combine like terms: -7 + 7 = 0
0 + 5n = 13 + 7
5n = 13 + 7

Combine like terms: 13 + 7 = 20
5n = 20

Divide each side by '5'.
n = 4

Simplifying
n = 4

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