A teacher was making identical activity packets using 92 crayons and 23 sheets of paper. What isthe greatest number of packets the teacher can make with no items left over?

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point

Write as a product: ac^2–ad+c^3–cd–bc^2+bd