a) 1,2/x=(1 intreg1/3)/2,5
(12/10)/x=(4/3)/25/10 simplific fractiile
(6/5)/x=(4/3)/5/2⇒
⇒x*4/3=6/5*5/2
4x/3=30/10⇒40x=90⇒x=9/4=2,25
b)
(125/100)/a=b/(3/10) simplific
(5/4)/a=b/(3/10)
a*b=5/4*3/10
a*b=15/40 simplific
a*b=3/8
100*a*b=100*3/8
=300/8 simplific
=75/2
