When I think of a number, double it, then add seven, I get 25. what number did I think of?

Question

Kaylin

Mathematics

17 January, 03:49

When I think of a number, double it, then add seven, I get 25. what number did I think of?

+3

Answers (2)

Know the Answer?

Jaxson Pierce · Answer 1

9

Step-by-step explanation:

let the number be x

double it = x+x = 2x

then add seven = 2x+7

i get 25 2x+7 = 25

subtract 7 from both sides

2x = 25-7 = 18

2x = 18

x = 18/2 = 9

Irene Anthony · Answer 2

9

Step-by-step explanation:

25-7=18

half of 18 is 9