Question

-9/10 - 13/25

Answer 1

You have to get a common denominator in order to subtract them.

Answer 2

There

Answer 3

In this case its 50..\[- \frac{9}{10}* \frac{5}{5} - \frac{13}{25}* \frac{2}{2}\] Which is \[- \frac{45}{50} - \frac{26}{50}\] Do the subtraction \[- \frac{71}{50}\]