f: (3 * x) + (4 * y) = 7
g: (4 * x) + (3 * y) = 7
A = Intersect(f, g)
e: x - y = 1
h: y = x^(2) - 3
B, C = Intersect(h, e)
p: x + y = 13
u: (x * y) = 40
D, E = Intersect(u, p)
k: x^(2) + y^(2) = 25
l: x - y = 1
F, G = Intersect(k, l)