Answer:
i this like true or false,if so its true
:)
Step-by-step explanation:
So we are given a system:

Substitute x = 2 we get the system:

Multiply the first equation by -5 and the second by 2 we get the system:

Adding the two equations we get :

We find the value of y by using any of the other equations like this:

Final solution:
The difference in temperatures is 54+12, so the difference is 66