Question

1.trasformati in fractii ordinare: 2,25 si 1,2(3)

2.siplificati pana optineti fractii ireductibile: 360/225 si 123 123/215 215

3.2 1/3+1 3/4

4.2/3x3/5x5/2

Answer 1

1)2,25=2 intregi 25/100 =2 intregi 1/4=9/4
  1,2(3)=1 intreg 23-2/90=1 intreg 21/90=1 intreg 7/30=37/30

2) 360/225=24/15=8/5
    123123/215215
        
Observam ca se repeta un grup de cifre.
 123123:123=1001
 125125:125=1001
 Fractia se simplifica cu 1001.
 123123/125125=123/125

3) 2 intregi 1/3+1 intreg 3/4=7/3+7/4=28/12+21/12=49/12

4) 2/3x3/5x5/2=2/5x5/2=1