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What is the solution set for 7x−3=18 , given the replacement set {0, 1, 2, 3, 4} ? A. x = 0 B.x = 2 C. x = 3 D. x = 4
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What is the solution set for 7x−3=18 , given the replacement set {0, 1, 2, 3, 4} ? A. x = 0 B.x = 2 C. x = 3 D. x = 4
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Nov 3, 2018
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What is the solution set for 7x−3=18 , given the replacement set {0, 1, 2, 3, 4} ? A. x = 0
B.x = 2
C. x = 3
D. x = 4
Mathematics
high-school
HobbitOfShire
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Solve for x using inverse operations
Add 3
7x-3+3=18+3
7x=21
Divide 7
7x/7=21/7
x=3
To check-
7(3)-3=18
21-3=18
18=18
The answer is C because it is the solution.
Ciro Costa
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Nov 5, 2018
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Ciro Costa
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Move all terms that don't contain x to the right side and solve.
x = 3
Rossiar
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Nov 6, 2018
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Rossiar
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