X + x - x is x
y + y + y is 3y
-z + z - z is -z
x + 3y
72,491 + 19,326 = 91,817
Leah scored 91,817 points
ANSWER

and

EXPLANATION
Since corresponding angles are equal,

Alternate angles are also equal, therefore,

Equation (2) minus equation (1) gives,


We put
in to equation (1)



Answer:
ABD = CDB
AB is parallel to DC
Step-by-step explanation:
angle a and c are right angles so they are equal and angle b and d are equal because they have a line that touch both letters
AB and DC are parellel because they are the same looking lines just on oppisite sides