Question

Write the answer in simplest form

1. 3/5 + 4/7 =
2. 5/8 - 1/4 =
3. 2/3 + 3/12=
4. 3/5 - 4/10=

Answer 1

1. 41/35
2. 3/8
3. 11/12
4. 1/5

Answer 2

I got 3/8 for #2, 11/12 for #3 and 1/5 for #4 and then I got 41/35 for #1 but I'm not sure if that's right- I know the other ones are though