Answer:
x=27
Step-by-step explanation:
132 + 21 = 153
180 - 153 = 27
Time=distance/speed
621÷51.75
=12
So it takes 12 hours
Answer:
Contributing
Step-by-step explanation:
Just contribute the number that is not is the column to the number that is in the column
Answer: the answer is 521
Step-by-step explanation: i don't know how i got it i am a human calculator :)