13+7+n=28

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Solution for 13+7+n=28 equation: 


Simplifying
13 + 7 + n = 28

Combine like terms: 13 + 7 = 20
20 + n = 28

Solving
20 + n = 28

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 + n = 28 + -20

Combine like terms: 20 + -20 = 0
0 + n = 28 + -20
n = 28 + -20

Combine like terms: 28 + -20 = 8
n = 8

Simplifying
n = 8

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