Question

9a -4b+8xz-9xzy+9a+4b+7xz-11xzy

Answer 1

Answer:

Step-by-step explanation:

9a -4b + 8xz - 9xzy + 9a + 4b + 7xz - 11xzy

= 9a + 9a + 7xz - 11xzy - 8xz - 9xzy (similar number will cut)

= 18a + 7xz - 8xz - 9xzy + 11xzy

= 18a + (-1xz) + 2xzy

= 18a - 1xz + 2xzy (answer)

Hope this helps....