Răspuns:
a)x/2=7/8
inmultim in cruce
8x=14
x=14/8--simplificam prin2
x=7/4
b) exact ca si la a merge cu inmultirea in ctuce
12/x=5/6
72=5x
cei cu x in dreapta, fara in stinga
5x=72
x=72/5-- de simplificat nu putem deci lasam fratia asa
