7s-15s-(-5s)+7s=-8

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Solution for 7s-15s-(-5s)+7s=-8 equation: 



7s-15s-(-5s)+7s=-8

We move all terms to the left:

7s-15s-(-5s)+7s-(-8)=0

We add all the numbers together, and all the variables

-1s-(-5s)+8=0

We get rid of parentheses

-1s+5s+8=0

We add all the numbers together, and all the variables

4s+8=0

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

4s=-8

s=-8/4

s=-2

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