s+3s-s=18

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Solution for s+3s-s=18 equation:



s+3s-s=18
We move all terms to the left:
s+3s-s-(18)=0
We add all the numbers together, and all the variables
3s-18=0
We move all terms containing s to the left, all other terms to the right
3s=18
s=18/3
s=6

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