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To count money, they have to multiply. When the multiplication is finished they have to add the products together. When some one deposits or withdraws money, the banker uses adding and subtracting to find the new balance of the account.
Subtracting a fraction is the same as adding its negative.
adding
they are both the same because you get the same answers you just drop the $ sign. Ex. $3.56+$1.50=$5.06 and 3.56=1.50=5.06
Subtracting. When you are given a problem asking "how much money is left," that means some money was taken away, and you are asked about the remaining amount. To take away money means using subtraction.