Andrew is trying to create a number puzzle for his younger sister to solve. He challenges his sister to find the mustery number. when 4 is subtracted from half a number the result is 5. The equation to represent the mystery number is 1/2m - 4 =. Andrews sister tries to guess the mustery number. Her first gues is 30. Is she correct? why or why not? What is the correct answer?

Question

Mathematics

Judah Leonard

19 June, 13:54

Andrew is trying to create a number puzzle for his younger sister to solve. He challenges his sister to find the mustery number. when 4 is subtracted from half a number the result is 5. The equation to represent the mystery number is 1/2m - 4 =. Andrews sister tries to guess the mustery number. Her first gues is 30. Is she correct? why or why not? What is the correct answer?

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Answers (1)

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Greyson · Answer 1

She is not correct b/c if you solve the problem the mystery number is 18.

1/2m-4=5

+4 + 4

1/2m=9 divide 9 by 1/3

m=18

You can check by replacing the m with 18 in the original equation and it will equal to 5.