21=-3s-6s

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Solution for 21=-3s-6s equation:


21=-3s-6s

We simplify the equation to the form, which is simple to understand
21=-3s-6s

We move all terms containing s to the left and all other terms to the right.
+3s+6s=-21

We simplify left and right side of the equation.
+9s=-21

We divide both sides of the equation by 9 to get s.
s=-2.3333333333333

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