Question

The difference between 2.4 and a number is 1.61, as shown below. What number should go in the box to complete the subtraction problem? 2.4 minus 0.box 9 equals 1.61

Answer 1

0.79

Explanation:

2.4 - X = 1.61

2.4 = 1.61 + X

0.79 = X

Answer 2

x. = 0.79

Explanation:

Let the unknown number be x

`2.4 - x = 1.61`

Collect like terms and simplify

`2.4 - 1.61 = x \\ 0.79 = x \\ \\ x = 0.79`