The sum of the left side of these two equations is equal to the same of the right side is these two equations
4x+8y + (-4x+2y) = 20 + 30
10y =50 ( x is eliminated)
y=5
Take this into the second equation
-4x +2y = 30
-4x + 2*5 = 30
x=-5
So x=-5
y=5
Addd 4 to both sides

sqare both sides
x+9=25
minus 9 both sides
x=16
plug it in for x and see



1=1
true
not extraneous
an extraneous root would be x=-34
Answer:

Step-by-step explanation:
Answer:
Step-by-step explanation:
2 - Corresponding angles theorem
6 - Alternate exterior angles theorem
8 - Transitive Property
Answer:
C
Step-by-step explanation: