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calculati: a) 3/2+23/2-5/2 b)1/2+3/4-1/5 REPEDE VA ROG ​

Răspuns :

Răspuns:

a)3/2+23/2-5/2=26/2-5/2=21/2

b)1/2+3/4-1/5=10/20+15/20-4/20=25/20-4/20=21/20