Add: (-4xz-15xy)+(20)xy-9yz-16xz)

[] 5x^2y^2-9yz-20x^2z^2
[] -24xyz
[] 5xy-9yz-20xz
[] 16xy-24yz-16xz

Bot GPT 3.5 Bot GPT 3.5 answered

[] -24xyz