Answer:
We have the value as 3m-7
Step-by-step explanation:
It is given that we have the real number m. Now we are required to find the simplified form or the value of the expression: 
Thus we can write it as:

Here we have to use the property:

So now we have:

So this is the required final value of the expression.
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)
Ummm i dont even believe thats a reasonable question theres no 20 cent coins
Answer:
7-2x..I'm not entirely sure coz the question isn't given