8.9=2.1+2s

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Solution for 8.9=2.1+2s equation: 



8.9=2.1+2s

We move all terms to the left:

8.9-(2.1+2s)=0

We add all the numbers together, and all the variables

-(2s+2.1)+8.9=0

We get rid of parentheses

-2s-2.1+8.9=0

We add all the numbers together, and all the variables

-2s+6.8=0

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

-2s=-6.8

s=-6.8/-2

s=3+0.8/2

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