2s+4-9s=-21

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Solution for 2s+4-9s=-21 equation:


2s+4-9s=-21

We simplify the equation to the form, which is simple to understand 
2s+4-9s=-21

We move all terms containing s to the left and all other terms to the right. 
+2s-9s=-21-4

We simplify left and right side of the equation. 
-7s=-25

We divide both sides of the equation by -7 to get s. 
s=3.57142857143

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