Answer:
C. 27x-67
Step-by-step explanation:
To simplify, combine like terms meaning variable terms with variable terms and constants with constants.
81x-54x = 27x
-46-21=-46+-21=-67
The expression is 27x-67
Answer:
20
Step-by-step explanation:
7 is right, and 8 is a square because all the sides are the same size (you can count the units, or do the calculation)
Answer:
5
Step-by-step explanation:
