Answer:
x=7; y=21
Step-by-step explanation:
These angles are congruent so:
7y-3=2x+4
We need to find x, and AB and DC are congruent, so:
3x+3=6x-18
Add 18 to both sides:
3x+21=6x
Subtract 3x from both sides:
3x=21
Divide by 3:
x=7
Substitute:
7y-3=2(7)+4
Simplify Like-Terms:
7y-3=18
Add 3 to both sides:
7y=21
Divide both sides by 7:
y=21
