7s + 4(3 - s) = 18
7s + 12 - 4s = 18 distribute the 4 to the terms inside the parentheses
7s - 4s = 18 - 12 combine like terms
3s = 6 simplify algebraically
s = 6 / 3 = 2 divide both sides by 2
so the end value that it's after here is s = 2
Ali T.
asked • 03/31/16Maths Question
7s + 4 (3 - s) = 18
What is s
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2 Answers By Expert Tutors
Bill P. answered • 03/31/16
Tutor
New to Wyzant
A math tutor that is both knowledgeable and patient in secondary math.
Use the distributive property to get
7s + 12 - 4s = 18
Combine like terms to get 3s + 12 = 18
subtract 12 on both sides to get 3s = 6
divide by 3 to get s = 2
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Ali T.
03/31/16