Question:
Solve 0 = 78*l - 72*l for l..

Answer:
0

Question:
Solve 0*g = 4*g for g..

Answer:
0

Question:
Solve 8*r + 0 = 23*r + 60 for r..

Answer:
-4

Question:
Solve p = -0*p - 6*p for p..

Answer:
0