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calculati 1,2×(1supra3+2supra5)=

Răspuns :

12supra 10x[(5+6)supra 15]=6supra5x11supra15=66supra 75=22supra25
1,2=12/10= 6/5
6/5 × (1/3 +2/5) = 6/5 × ( 5/15 + 6/15)= 6/5 × 11/15 = (2x11) / 5x5=22/25= 0,88