Question

54 minus nine times a certain number gives eighteen

Answer 1

The number is 4

(i.e. 54 - 9(4) = 18)

Explanation:

54 minus nine times a certain number gives eighteen

Let the number be x,

then,

54 - 9x = 18

solving this equation,

54 = 18 + 9x

54 - 18 = 9x,

36 = 9x

36/9 = x

x = 4

Hence the number is 4