Explicație pas cu pas:
a)
[tex]\displystyle -5,12 =- \frac{512^{(4} }{100} = -\frac{128}{25}[/tex]
b)
[tex]\displystyle 5,(27) =- \frac{527-5 }{99} = \frac{522^{(9} }{99}=\frac{58 }{11}[/tex]
c)
[tex]\displystyle 2,1(3) =- \frac{213-21 }{90} = \frac{192^{(6} }{90}=\frac{32 }{15}[/tex]
d) 16 / 125 = 0,128
e) 12 / 33 = 0,(36)
