Answer:
x=1; y=13/5
Step-by-step explanation:
(I'm sure you can do given yourself)
<D=<B Def of parallelogram
8x+5=5y Substitution
<a and <d is Def of paralleogram
supplementary
3x+10=5y Substitution
8x+5=5y Do system of equations
3x+10=5y
8x+5=3x+10 they both equal 5y so set both the equations together
5x+5=10 subtract 3x from both sides
5x=5 subtract 5 from both sides
x=1 divide by 5 on both sides
8(1)+5=5y plug in x to one of the previous equations
13=5y Simiplfiy
y=13/5
