a) 5 1/3*(3/5x+1/8)=1 2/3
(16/3*3/5x)+(16/3*1/8)=5/3
16x/5+2/3=5/3
16x/5=5/3-2/3
16x/5=1
x=1:1/16=5/16
б) 4/25:x=3/20:3/10
4/25x=1/2
25x*1=8
x=8/25=0,32
a) 5 1/3*(3/5x+1/8)=1 2/3
(16/3*3/5x)+(16/3*1/8)=5/3
16x/5+2/3=5/3
16x/5=5/3-2/3
16x/5=1
x=1:1/16=5/16
б) 4/25:x=3/20:3/10
4/25x=1/2
25x*1=8
x=8/25=0,32