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 Arithmetics Subtraction of whole numbers Subtraction of whole numbers If you have a set of numbers and extract some of them, how many of them are left? Let's see the following picture: But it is not necessary to draw the picture. You can say: 3 - 1 = 2 245 - 129 = 116 3456 - 2391 = 1065 Solve: $\;2479\;-\;1287\;=$