Question

on adding 9xy+5yz-3xz and 3yz+2xz-5x,we get

Answer 1

x(9y - 5) + 8yz - xz.

Answer 2

Here is your answer

$(9xy + 5yz - 3xz) + (3yz + 2xz - 5x) \\ = 9xy + 5yz + 3yz - 3xz + 2xz - 5x \\ = 9xy + 8yz - xz - 5x$
Hope it helps you