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3=-21/4s-5+3
We simplify the equation to the form, which is simple to understand
3=-21/4s-5+3
We move all terms containing s to the left and all other terms to the right.
-4s=-5+3-3
We simplify left and right side of the equation.
-4s=-5
We divide both sides of the equation by -04 to get s.
s=1.25
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