oblicz. odejmowanie zamień na dodawanie . rozpisz !!! 23 - 42 - (-19) = ( - 79 ) - 34 - ( - 45 ) - ( -34) = (-31) - (-39) - 32 = (-24) - (-35) + (-3) - (-3) = (-17) + (-44) - (-25) =
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23 - 42 + 19 = (-79) - 34 + 45 + 34 = 39 - 32 = (-24) + 35 - 3 + 3 = (-17) - 44 + 25 = 9 - 9 = 0