Answer:
pretty sure its d
Step-by-step explanation:
I don't understand your question fully, try to list your full problem in the future and maybe people will be able to better help you.
The least common multiple or LCM
Answer:
Always
Step-by-step explanation:
If the irrational parts of the numbers have zero sum, the sum is rational. If not, the sum is irrational. It is true, for example, for 2 7, 3. It is false, for example, for3+2 5,−2 5 .
#6 is incorrect
it's 6 7/8
#7 is correct