Ex 4 VA ROG FOARTE FRUMOS

Răspuns:
a=[0,0(6)-0,4]^2:1,(3)
a=[0,(6)-0,4]:1,(3)
a=(6/9-4/10):(13-1/9)
a=(2/3-2/5):12/9
a=(10/15-6/15):4/3
a=4/15:4/3
a=4/15×3/4
a=1/5
(1,5)^-1=5€N