n*10+10=30

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Solution for n*10+10=30 equation: 



n*10+10=30

We move all terms to the left:

n*10+10-(30)=0

We add all the numbers together, and all the variables

n*10-20=0

Wy multiply elements

10n-20=0

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

10n=20

n=20/10

n=2

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