Answer:
x = 3
y = 2
Step-by-step explanation:
Opposite side of parallelogram are equal.
-4x + 6 = -6x
-4x = -12x
-x = -3
x = 3
7y + 3 = 12y - 7
-5y = -10
-y = -2
y = 2
-7x+3 (hope this is the answer you are looking for)
No because spheres are not polyhedra
