(3+n)7=28

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Solution for (3+n)7=28 equation: 



(3+n)7=28

We move all terms to the left:

(3+n)7-(28)=0

We add all the numbers together, and all the variables

(n+3)7-28=0

We multiply parentheses

7n+21-28=0

We add all the numbers together, and all the variables

7n-7=0

We move all terms containing n to the left, all other terms to the right

7n=7

n=7/7

n=1

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