Answer:
19 or 20
Step-by-step explanation:
Answer:
18: 3/4
19: 5/8
20: 1/2
21: 9/10
22: 2/3
23: 5/6
24: 4/9
25: 2/7
26: 3/4
27: 7/10
28: 4/5 (I'm in a rush, so make sure to double check the answers)
Well going off what I know (you don't have the equations up)
You have to isolate x
3/4x = 6
(4) 3/4x = 6 *multiplying by 4 cancels the fraction.
3x = 24
Divide by 3
X = 6
Answer:

Step-by-step explanation:

Substitute the value of 

Is answer 21?
i assumed number as x
then i followed the process