Ok, great to have you! I will finally answer your question.
This seems to be a system of equations. I solve most of mine on Desmos.
Let us write two equations to model this:


We get the graph. Note the intersection at (26,33).
That means that route X is 26 miles long,and route Y is 33 miles long!.
Hope this helps.
This is an easy one.
first you move 2/3 to the other side
x=3-2/3
so you get
x=1/3
Answer:
No, that is not possible
Explanation:
P = 2L + 2W
Insert numbers into equation
p=(2)(20)+(2)(11)
Step 1: Simplify both sides of the equation.
p=(2)(20)+(2)(11)
p=40+22
p=(40+22)(Combine Like Terms)
p=62
p=62
The perimeter is 62, not 64, so the perimeter can't be 64 if the length 20 and the width is 11.
From the second equation we can find that d=43-(9/10)*n
we can put this equation into the first one,
So we have equation 60(43-(9/10)*n)+65n=2800
Solving that we get n=20
60d+65*20=2800
d=25
So the answer is d=25 and n=20