7(10+n)=77

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Solution for 7(10+n)=77 equation: 



7(10+n)=77

We move all terms to the left:

7(10+n)-(77)=0

We add all the numbers together, and all the variables

7(n+10)-77=0

We multiply parentheses

7n+70-77=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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