Dennis has a 3/7 yard long hair. She cuts 1/5. How much is left?

Answer: 8/35

Step-by-step explanation:

Dennis has 3/7 yard long hair and cuts 1/5. So make 7 and 5, 35, because it is a number they are both divisible to. Then whatever you multiplied by do it to the numerators and then subtract.

(Note: if the denominator is the same with the other fraction don't subtract them only the numerators)

8/35 is your answer because

3 x 5 / 7 x 5 1 x 7 / 5 x 7

15/35 - 7/35

15 - 7 / 35

8/35