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20. Calculaţi: a) 78-(-8+12-22)+5.(-4)²; b) 10-(-2)-2-(16-20-30); c)-15-[2-(-35-45)-40]-103; d) 82-(-5)²-20-[16+(-20)]+100.​

20 Calculaţi A 788122254 B 1022162030 C152354540103 D 825201620100 class=