(7s-21)+(6s+12)=17

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Solution for (7s-21)+(6s+12)=17 equation: 



(7s-21)+(6s+12)=17

We move all terms to the left:

(7s-21)+(6s+12)-(17)=0

We get rid of parentheses

7s+6s-21+12-17=0

We add all the numbers together, and all the variables

13s-26=0

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

13s=26

s=26/13

s=2

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