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Calculati [(26/15+1/10-4/3)-(7/2-31/12)*3/11+1/2]:3/4

Răspuns :

={[26·2+1·3-4·10)/30]-[(7·6-31)/12]·3/11+1/2}:3/4
=[15/30-11/12·3/11+1/2]:3/4
=[1/2-1/4+1/2]:3/4
=[(2-1+2)/4]:3/4
=3/4:3/4=3/4·4/3=1