Question

Which equation has the solution x = 5? Select each correct answer. 18−2x=9 32−4x=12 11 + 6x = 22 25x+4=9 x5+5=6 3x + 1 = 9

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Answer 1

32 - 4x = 12

Explanation:

Substitute x = 5 into the equations and compare:

18 - 2x = 18 - (2 x 5) = 18 - 10 = 8 incorrect

32 - 4x = 32 - (4 x 5) = 32 - 20 = 12 correct

11 + 6x = 11 + (6 x 5) = 11 + 30 = 41 incorrect

25x + 4 = (25 x 5) + 4 = 125 + 4 = 129 incorrect

`x^5+5=(5^5)+5=25+5=30` incorrect

3x + 1 = (3 x 5) + 1 = 15 + 1 = 16 incorrect