3s+s+(s+75)=180

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Solution for 3s+s+(s+75)=180 equation: 



3s+s+(s+75)=180

We move all terms to the left:

3s+s+(s+75)-(180)=0

We add all the numbers together, and all the variables

4s+(s+75)-180=0

We get rid of parentheses

4s+s+75-180=0

We add all the numbers together, and all the variables

5s-105=0

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

5s=105

s=105/5

s=21

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