Define a new binary operation.
For example, f(x, y) = x*y + x/y for all real x and all real y other than y = 0.
The f(2,2) = 2*2 + 2/2 = 4 + 1 = 5
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23 + 2 19 + 3 + 3 17 + 5 + 3 17 and 4 twos 17, 2 threes and 2 twos 13 + 7 + 5 13 and 6 twos 13 and 4 threes 11 and 2 sevens 11 and 7 twos and a bunch more up to 10 twos and 5 11 twos and 3
5 twos = 10 5/2 = 2.5
no five fourths is one and one fourth but 5 twos is 2 and a half
There are three twos in the number 40. This can be determined by dividing 40 by 2, which equals 20. Dividing 20 by 2 again equals 10, and dividing 10 by 2 equals 5. Therefore, 40 can be expressed as 2 x 2 x 2 x 5.
((-5 - -2) - 3) x -4 = 24