Assuming you meant to write two separate expressions:
1) ay - by + 3yWe can factor out the common factor "y" to get:y(a - b + 3)
2) 6xy - 12x + 9xzWe can factor out the common factor "3x" to get:3x(2y - 4 + 3z)
Assuming you meant to write two separate expressions:
1) ay - by + 3y
We can factor out the common factor "y" to get:
y(a - b + 3)
2) 6xy - 12x + 9xz
We can factor out the common factor "3x" to get:
3x(2y - 4 + 3z)