Answer:
-1
Step-by-step explanation:
-5-15+4+15
=-20+19
=-1
Yes, is subtraction, to get their "difference".
first off, let's convert the mixed fractions, to "improper", and then subtract.

Answer:if im right you need to do 54 divided by 2= 27 so 27+27=54
Step-by-step explanation:
I can’t see the photo so I can’t tell you the answer but good luck. Congruent means they look the same I think.