1)5:8=x:168x =80x=102) 0.3/1.5=4.2/x 0.3x=6.3x=2.13) 5/3:x=2:3/22x=5/2x=5/4
5:8=x:168x=5*16x=100.3/1.5=4.2/x0.3x=1.5*4.2x=215/3:x=2:3/22x=5/3*3/2x=5/4