Question

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Answer 1

Plug x = 5 into all the equations
A: 2 + 5 = 3 (false)
B: 3(5) = 15 (true)
C: 5/2 = 10 (false)
D: 5 - 7 = 12 (false)

Solution: B

Answer 2

3x=15

Explanation:

3(5)=15 it's the only one where x can be 5