X+y=57
y=x+15
x+x+15=57
2x=42
x=21
y=21+15
y=36
Answer:
Choice A
Step-by-step explanation:
Hopefully this helps!
Answer:
27
Step-by-step explanation:
643-166=477
477÷18=26.5
Then, round to the nearest whole.
Which makes it 27 sets.
28.3 is the answer in 1 decimal place!
