Factor ax − 2ay + 2bx − 4by − 3x + 6y.
ax - 2ay + 2bx - 4by - 3x + 6y
a(x - 2y) + 2b(x - 2y) - 3(x - 2y)
(a + 2b - 3)(x - 2y)
+1223 +1223 
