4s=-12/21

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Solution for 4s=-12/21 equation: 



4s=-12/21

We move all terms to the left:

4s-(-12/21)=0

We get rid of parentheses

4s+12/21=0

We multiply all the terms by the denominator


4s*21+12=0

Wy multiply elements

84s+12=0

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

84s=-12

s=-12/84

s=-1/7

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