3/8:9/10=x:2/5 9x/10=3/20 9x=3/2 x=1/61/4:x=2/3:1/6 2x/3=1/24 2x=1/8 x=1/16x/6.5=5.2/4 4x=33.8 x=8.45x:3/4=12:1/8 x/8=9 x=721/2:2/7=1/3:4x 2x=2/21 x=1/21(x-1):3/5=0.1:3/5 0.6x-0.6=0.06 0.6x=0.66 x=1.1