I am horrible in fractions

I have 8 problems that I need to submit for homework they are multiple choice

1. 9/10 + 3/7

a. 12/17

b. 2/7

c. 93/70

d. 1

2. 18 = 4 - 2/7x

a. 77

b. -4

c. -49

d. -6 2/7

3. Evaluate: 4 - 1/2xy, for x = 6 2/3 and y = -5/6

a. 6 7/9

b. 5

c. -2/3

d. 1 1/3

4. 7 5/6 + 2 3/4 Add.

a. 9 7/12

b. 9 4/5

c. 10 7/12

d. 9 2/3

5. 2 1/4 - 9 4/7 Subtract.

a. -8 9/28

b. -7 9/28

c. 8 9/28

d. 7 9/28

6. 6 5/6y - 3 1/12 y Combine like terms

a. 3 3/4y

b. 3 1/3y

c. -3 2/3y

d. 3 3/4

7. (-5 3/4) . (- 3 7/9) Multiply

a. 21 13/18

b. 15 7/12

c. 8 3/4

d. -9 19/36

8. 32 divided by 4 5/8

a. 8 1/40

b. 6 34/37

c. 148

d. 8 5/8