7=1+2s

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Solution for 7=1+2s equation: 



7=1+2s

We move all terms to the left:

7-(1+2s)=0

We add all the numbers together, and all the variables

-(2s+1)+7=0

We get rid of parentheses

-2s-1+7=0

We add all the numbers together, and all the variables

-2s+6=0

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

-2s=-6

s=-6/-2

s=+3

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