20y+10(y+7)=490

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Solution for 20y+10(y+7)=490 equation: 



20y+10(y+7)=490

We move all terms to the left:

20y+10(y+7)-(490)=0

We multiply parentheses

20y+10y+70-490=0

We add all the numbers together, and all the variables

30y-420=0

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

30y=420

y=420/30

y=14

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