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Calculeaza in doua moduri dupa model: | 8×(3+4)=8×3+8×4 =24+32 =56 ||. 8×(3+4)=8×7 =56 a) 4×(2+6)= b) 7×(7+2-4)= c) 8×(2+3+5)= d) 6×(8-5)= e) 9×(10-3+2)=​