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Автор - serponge

вычислите. а) (6- 2 4/5)*3 1/8 - 1 3/5 : 1/4; b) (1 2/3 + 2 4/9) : (4 26/27-2 2/9)

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Автор - 1Kz1
Надеюсь поймешь подчерк;)

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