arlenevilla5 arlenevilla5

18-09-2015
Mathematics

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Can you find the sum [5.5+{-2.3]+[-5.5+2.3} without performing any addition

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Аноним Аноним

18-09-2015

[tex]\sf = 5.5-2.3-5.5+2.3 \\ \\ =3.2-5.5+2.3 \\ \\ =3.2+-3.2 \\ \\ =0 \\ [/tex]

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