Answer: 3 3/9+7 6/11 = 10 87/99
Step-by-step explanation:
a. 3 3/9+7 6/11 = 10 87/99
First and foremost, we need to know the lowest common multiple of 9 and 11 which is 99.
Therefore, 3 3/9 + 7 6/11 would be:
= 3 33/99 + 7 54/99
= 10 87/99
This is correct
b. 2 3/8 + 6 4/5 = 8 12/40
First and foremost, we need to know the lowest common multiple of 8 and 5 which is 40.
Therefore, 2 3/8 + 6 4/5 would be:
= 2 15/40 + 6 32/40
= 8 47/40
= 9 7/40
Since the answer gotten is 8 12/40. This is wrong.
c. 3 3/7 + 4 2/3 = 7 2/21
First and foremost, we need to know the lowest common multiple of 7 and 3 which is 21.
Therefore, 3 3/7 + 4 2/3 would be:
= 3 9/21 + 4 14/21
= 7 23/21
= 8 2/21
Since the answer gotten is 7 2/21. This is wrong.
d. 4 5/6 + 5 5/7 = 9 10/13
First and foremost, we need to know the lowest common multiple of 6 and 7 which is 42.
Therefore, 4 5/6 + 5 5/7 would be:
= 4 35/42 + 5 30/42
= 9 65/42
= 10 23/42
This is wrong as the answer gotten is 9 10/13
Therefore, the true option is
3 3/9+7 6/11 = 10 87/99
