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Answer:
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Step-by-step explanation:
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Problem:
Find the solution set of 16x +24 = 7x + 60 Consider the replacement set {-2, 4, 9}, whose values or elements are arbitrarily given.
Solution:
Replace the x with -2, then 4, and 9 to the equation of 16x +24 = 7x + 60.
Substitute the equation if x = -2.
- 16x +24 = 7x + 60
- 16(-2) +24 = 7(-2) + 60
- -32 + 24 = -14 + 60
- -8 ≠ 46
- -8 = 46 is False
Substitute the equation if x = 4.
- 16x +24 = 7x + 60
- 16(4) +24 = 7(4) + 60
- 64 + 24 = 28 + 60
- 88 = 88
- 88 = 88 is True
Substitute the equation if x = 9.
- 16x +24 = 7x + 60
- 16(9) +24 = 7(9) + 60
- 144 + 24 = 63 + 60
- 168 ≠ 123
- 168 = 123 is False
Answer:
∴ Only the replacement of x with 4 in the equation makes the sentence true. Therefore, the solution of 16x +24 = 7x + 60 is {4}.
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