12n+5=7n+105

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Solution for 12n+5=7n+105 equation: 



12n+5=7n+105

We move all terms to the left:

12n+5-(7n+105)=0

We get rid of parentheses

12n-7n-105+5=0

We add all the numbers together, and all the variables

5n-100=0

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

5n=100

n=100/5

n=20

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