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Calculaţi: a) (|-4|+|16|)· |-3|; b) |4|× (|100|-|-70|); . c) |−5| × (|28|-|–8|); e) |6|× (|-80|-|-40|); d ) (|30|+|-20|) ×|-7|; e) (|37|+|-31|)×|-2|; Va rog frumos!​