<span>(37+s)+s=375
We move all terms to the left:
(37+s)+s-(375)=0
We add all the numbers together, and all the variables
(s+37)+s-375=0
We add all the numbers together, and all the variables
s+(s+37)-375=0
We get rid of parentheses
s+s+37-375=0
We add all the numbers together, and all the variables
2s-338=0
We move all terms containing s to the left, all other terms to the right
2s=338
s=338/2
s=169</span>
