Answer:

Step-by-step explanation:
<u>Solution Of A System Of Equations
</u>
A system of linear equations is given as
There are many methods to solve them. We will use the method of reduction
The given system is

Multiplying the second equation by -3

Adding the resulting equations


C, i dont know dont use my answer unless you know
Answer:you got this
Step-by-step explanation:
B) At a restaurant, William and eight friends divided the bill evenly. If each person paid $10.20, what was the total bill?
Step-by-step explanation:
X=y-5
Now,
4x-y=4
4(y-5)-y=4
4y-20-y=4
3y=24
Y=8
Substituting the value of y
8-5=x
X=3