21s=4+15s

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Solution for 21s=4+15s equation:


21s=4+15s

We simplify the equation to the form, which is simple to understand 
21s=4+15s

We move all terms containing s to the left and all other terms to the right. 
+21s-15s=+4

We simplify left and right side of the equation. 
+6s=+4

We divide both sides of the equation by 6 to get s. 
s=0.66666666666667

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