Answer:
a) 5/7
b) 2/3
c) 1/6
Explanation:
a) 2/7 + 3/7
since the denominators are both 7 we use 7 as the LCM ( lowest common multiple)
2+3/7 = 5/7
b) 5+7/8 = 12/8. 4 can go into both numbers so it gives 3/2
c) 2/3 - 1/2 multiply the denominator since they are different (3×2) =6
4-3/6 = 1/6