a) 4/15
____ = 4/15 :4= 4/15 • 1/4 = 4/60= 1/15
4
b) 6/5 6/5
_______=_____= 6/5 : 12/10 = 6/5 • 10/12=
4/5 • 3/2 12/10
=60/60=1
c) 3/2 • 2/7 6/14
_________=____=6/14 : 9/12 = 6/14 • 12/6=
9/4 • 1/3 9/12
=72/84= 6/7
d)2/5 : 5/2 2/5 • 2/5 4/20
_________=_______=_____= 1/5 : 1/2=
3/7 • 7/6 21/42 1/2
= 1/5• 2/1= 2/5
