Answer:
35.71
Step-by-step explanation:
For this case we must solve a system of two equations with two unknowns, given by "x" and "y".
We have:

We multiply (2) by -1:

We add (1) and (3):

Clearing x:

We substitute
in (2)

Thus, the solution of the system is 
Answer:
The solution of the system is 
Answer:
4x - 16
Step-by-step explanation:
5.5x + 1 - (1.5x + 17)
5.5x + 1 -1.5x -17
Combine like terms
4x + 1 -17
4x -16