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a) (7/4+1/6)×12/23= b) (5/6-1/3)÷1/4= Urgent!!!!!!!!!Vă rog!!!!!

Răspuns :

a) (7/4 + 1/6)*12/23 = (21/12 + 2/12)*12/23=(23/12)*12/23 = 1
b) (5/6-1/3):1/4 = (5/6 - 2/6)*4/1 = 3/6 * 4/1= 1/2 * 4/1 = 2