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8. Calculaţi: a) 2-1-2/+(-3) 1-41; c) -2-1-2/+1-1-3-1-31-7|; e) (-3) - |-18-(-2) + (−6) ·|–5||-·|-–-5 + 1]; b) |--3-7)+(-10)-3-(-10)-(-3); d) -2+6-30 (-17)- |-321-5; f) (32-41)-|-16-41 + 21-(-32)-(-1)​