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0,6-2supra 5 +9supra5

Răspuns :

0,6=6/10=3/5
3/5 - 2/5 + 9/5 = (3-2+9)/5 = 10/5 = 2
-1.4/5 +1.8 (/=supra)
-0.28+1.8 = 1.52