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4s-4=30-s;7
We simplify the equation to the form, which is simple to understand
4s-4=30-s;7
We move all terms containing s to the left and all other terms to the right.
+4s+1s=+30+4
We simplify left and right side of the equation.
+5s=+34
We divide both sides of the equation by 5 to get s.
s=6.8
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