1.1.8:x=9:1 2.x:4/5=3/4:2/1 3.0.16:4/5=x:15 4.0.14:4.8=x:12 5.2/7:x=3/5:1/7 6.3/8:2/5=x:5/6 7.1/10:x=5/1:7 8.1.6/4.8=0.2/x