Answer:

Step-by-step explanation:

4(5a-8) = 20a - 32. 20a - 32 + 2a = 22a - 32, which is not equal to 12a - 6. Mary is wrong.
Answer:It's 18
Step-by-step explanation:Multiply 7 and 6 to get 42
Subtract 10 from 13 to get 3
Divide 42 by 3 to get 14
Add 14 and 4 to get 18
Answer:
432
Step-by-step explanation:
Subtract 515 from 947
Answer:
use gooogle
Step-by-step explanation: