Answer: 26/35
1. Find the least common denominator for the fractions. It would be 35.
2. Multiply 1/7 by 5/5 = 5/35
- 1*5=5
-7*5=35
3. Multiply 2/5 by 7/7 = 14/35
- 2*7=14
-5*7=35
4. Since you can’t subtract 14/35 from 5/35, borrow 35/35 from 2.
2 5/35
1 5+35/35
1 40/35
5. Now simplify 40 - 14/ 35 which is 26/35. Since 1-1 = 0, the answer is 26/35.