FND THE SUM OR DIFFERENCE! 3 QUESTIONS!! MATHMATICS

1. 7/8 - 5/12
a.11/24
b. 2/24
c. 2/8
d. 2/12

2. 1/6 + 3/8
a. 4/6
b. 4/8
c. 4/14
d. 13/24

3. the sum of two numbers 7/8 one addend is 3/4 what is the other?
a. 4/4
b.1/8
c. 1/4
d 2/8