3.9s-5+2.1s=19

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Solution for 3.9s-5+2.1s=19 equation: 



3.9s-5+2.1s=19

We move all terms to the left:

3.9s-5+2.1s-(19)=0

We add all the numbers together, and all the variables

6s-24=0

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

6s=24

s=24/6

s=4

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