Answer:
Step-by-step explanation:
the first one is 9 and the third one is -3 so you minus 9 and you get zero but then you have to get -3 so you minus another 3 and then you get 12 the different is 12
Step-by-step explanation:
The answer is 3 cm .
I hope it helps you
Three of a number minus seven < (and of course, whatever comes afterwards.)