Answer:
No, she cannot use a ratio of 21 to 6. You can figure this out in a few different ways. First you can simplify down the fraction 18/3, to get 6/1. 6/1 does not equal 21/6, because 21/6 equals 7/2. However, 6/1 it does equal 36/6. You could also noticed that three doubles to make six, yet 18 does not double to make 21. :D
Step-by-step explanation:
600 students, how many students watch anime?
Answer:
1 solution --> y=-13/2
Step-by-step explanation:
7(y+3)=5y+8
7y +21=5y+8
2y=8-21
2y=-13
y=-13/2