Răspuns:
Explicație pas cu pas:
a) 1/2.5 = 4 ; =0.4+(5*7)/(4*3)-7/(12/4)=se aduce la Ncomun: 12 =(12*0.4+35-8)/12=4.8+7)/12=11.8/12=118/120=59/60
b) 0.(6)+0.(2) =0.(8) =0.(8)+(2*3)/(3*4)=0.(8)+0.5=8/9+12.5/9=125/90=25/18
c) = 3/4(2*8+3*1)/18=19/(4*6) (simplif cu 3) = 19/24
d) 0.23x10=2.3 =2.3/2.3+1/3=1+1/3=4/3
e) (0.(7)/7)/7=0.(1)/7 ; (83/31)^0=1 =0.(1)/7+2.(3) +1 N comun =7
=(0.(1) + 16.(3) + 7)/7 = (1/9 + 16 +3/9 +7)/7=(23+4/9)/7=(207+4)/(7*9)
=211/63
f) (0.5)^2=0.25 0.25*8=2 2+0.01---=2.01 ??? 0.01^0.5 (de ex)=0.1
