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6. Calculaţi cît mai simplu: a) 57,48-0,9093 +52,52-0,9093; b) 6,395-835,67 +6,395.164,33; 100 c) 104,76-378,91-91,76-378,91; d) 0,78-496,6-396,6-0,78. 00:100.0 30.01.01 to ele 10​