3(15+s)+3s=135

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Solution for 3(15+s)+3s=135 equation: 



3(15+s)+3s=135

We move all terms to the left:

3(15+s)+3s-(135)=0

We add all the numbers together, and all the variables

3(s+15)+3s-135=0

We add all the numbers together, and all the variables

3s+3(s+15)-135=0

We multiply parentheses

3s+3s+45-135=0

We add all the numbers together, and all the variables

6s-90=0

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

6s=90

s=90/6

s=15

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