вычислите
32*43-22*43-52*53+42*53
68*2-68*15+12*2-12*2-68*5
88*75-12*45+12*75-88*45
32*43-22*43-52*53+42*53
68*2-68*15+12*2-12*2-68*5
88*75-12*45+12*75-88*45
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32*43-22*43-52*53+42*53 = -100
68*2-68*15+12*2-12*2-68*5 = -1224
88*75-12*45+12*75-88*45 = 3000