Since neither 5x nor -y has a "like term" in <span>2xy+xy, the sum of these quantities is simply
</span><span>2xy+xy + 5x - y = 3xy + 5x - y
You might want to write this as y(3x -1) + 5x. </span>
8/12-9/12 multiply 4 by 3 and then multiply 3 by 3 and you'll get 9/12
