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a. (-1/2) ×(-2/3) ×[6/9+(-5/8) ]+3/6
b. 4/2×5/3×0×6/7+5/2
c. 2/4×[-8/4×(-3/8-5/9) ]-3/8
H.(-19+24) ×[1/15-8/45×(0, 9+1 2/5) ] va rog ajutați. ma