Joan has 36 books in her library. she bought several books at a yard sale over the weekend. of those books,4 were chapter books. she now has 88 books in her library. how many books did she buy at the yard sale? write and solve as an equation

the first one, all those points on the line just make a strait line.

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

amount of apples bought =$ 2.6

amount of peaches bought =$ 1.475

amount given by you to cashier= $ 20

amount received by me= amount given by you to cashier -   [amount of apples bought +amount of peaches bought]

                                        = 20   - [1.475 + 2.6]

                                        = 20 -   [ 4.075]

                                        =   $15.925

so, change received by me = $15.925