3(y+20)=99

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Solution for 3(y+20)=99 equation: 



3(y+20)=99

We move all terms to the left:

3(y+20)-(99)=0

We multiply parentheses

3y+60-99=0

We add all the numbers together, and all the variables

3y-39=0

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

3y=39

y=39/3

y=13

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