If you have 7 apples and drop 5 how many do you have left?

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

4+(2+x) can you me solve this problem