Damazo T. answered 09/29/14
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Hello, Alyssa.
Let me take care of the bracket first.
s+3(s-31) Use the distributive property
s+3s-93 Combine like terms
4s-93 This is the value of the bracket.
2[4s-93]=18 Use the Distributive Property
8s-186= 18 Add 186 to both sides
+186 +186
8s = 204 Divide both sides by 8
s= 25.5
I hope this helps. Thanks for posting.
D.Y. T.
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