a)(3+2/5):х=(6+4/5):(1+1/3)
(17*10)/255=x
x=2/3
b) (7+1/3):(2+1/2)=(3+2/5):у
y=(15*17)/220
y=51/44
y=1+7/44
a)(3+2/5):х=(6+4/5):(1+1/3)
(17*10)/255=x
x=2/3
b) (7+1/3):(2+1/2)=(3+2/5):у
y=(15*17)/220
y=51/44
y=1+7/44