Question

The sum of x + z + xy , - x + y - yz and - z - y + xy​

Answer 1

Answer:

2xy - yz

Step-by-step explanation:

The sum of x + z + xy , - x + y - yz and - z - y + xy​ is

x + z + xy  + (- x + y - yz) + (- z - y + xy)​

x + z + xy  - x + y - yz) - z - y + xy

2xy - yz