Fill in the missing digits in the subtraction.

? 9

_ 5 ?

2 3

Firstly I work out the equation 9 minus 3, this will leave me with our first mystery number. This number is 6. I then had to work out what number, minus 5 equals 2. The second mystery number is 7.

This is the resulting equation.

7 9

_ 5 6

2 3