Question

Dau coroana ajutati.ma plz.

Answer 1

1) 0,25=25/100 simplificată prin 25=1/4
(1/4+1/3)*12/5=(3/12+4/12)*12/5=7/12*5/12=7/5
N.C=12
2) 1,(3)=1 întreg 3/9=1 întreg 1/3=4/3
0,(3)=3/9=1/3
(4/3-1/3)*2/3=3/3*2/3=1*2/3=2/3

3) N.C=15
=(12/15+10/15)*25/11+1/2=22/15*25/12+1/2=10/3+1/2=20/6+3/6=23/6

4) =(1/4+4/9)*4/5=(9/36+16/36)*4/5=25/36*4/5=5/9