Răspuns:
Explicație pas cu pas:
4/15*15/7=60/105=12/21
4/15*1/4=4/60=1/15
4/15*63/8=21/10
4/15*49/4=49/15
4/15*-25/16=-5/12
4/15*-1,5=4/15*-15/10=-3/5
4/15*0,(3)=4/15*3/9=4/45
4/15*-1=-4/15
4/15*0=0
sper ca sunt corecte calculele ptc le am facut in minte