Find the sum or difference. All answers should be in simplest form 1 / 3/7 + 10 6/7

12 1/9 + 10 2/3

3 5/9 + 1 3/9

5 2/3 - 4 5/9

1. 12 2/7

2. 22 7/9

3. 4 8/9

4. 1 1/9

Step-by-step explanation:

1. 1 3/7+10 6/7

Change to improper fractions and solve

(10/7) + (76/7) = (10+76) / 7=86/7

Convert 86/7 to mixed number

12 2/7

2. 12 1/9+10 2/3

Change to improper fractions and solve

(109/9) + (32/3) = (109+96) / 9=205/9

Convert 205/9 to mixed number

22 7/9

3. 3 5/9 + 1 3/9

Change to improper fractions and solve

(32/9) + (12/9) = (32+12) / 9=44/9

Convert 44/9 to mixed number

4 8/9

4. 5 2/3-4 5/9

Change to improper fractions and solve

(17/3) - (41/9) = (51-41) / 9=10/9

Convert 10/9 to mixed number

1 1/9