7s+3s=20

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Solution for 7s+3s=20 equation: 



7s+3s=20

We move all terms to the left:

7s+3s-(20)=0

We add all the numbers together, and all the variables

10s-20=0

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

10s=20

s=20/10

s=2

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