3.84:2.4=x:1/4 x:0.75=20.25:1/8 3.6:4/3=1.8:x x:0.75=2:1.25 2/3:x=2/15:3/5 28:42=x:0.8
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![3.84:2.4=x:1/4 x:0.75=20.25:1/8 3.6:4/3=1.8:x x:0.75=2:1.25 2/3:x=2/15:3/5 28:42=x:0.8](/uploads/image/z/4326932-20-2.jpg?t=3.84%3A2.4%3Dx%3A1%2F4+x%3A0.75%3D20.25%3A1%2F8+3.6%3A4%2F3%3D1.8%3Ax+x%3A0.75%3D2%3A1.25+2%2F3%3Ax%3D2%2F15%3A3%2F5+28%3A42%3Dx%3A0.8)
3.84:2.4=x:1/4 x:0.75=20.25:1/8 3.6:4/3=1.8:x x:0.75=2:1.25 2/3:x=2/15:3/5 28:42=x:0.8
3.84:2.4=x:1/4 x:0.75=20.25:1/8 3.6:4/3=1.8:x x:0.75=2:1.25 2/3:x=2/15:3/5 28:42=x:0.8
3.84:2.4=x:1/4 x:0.75=20.25:1/8 3.6:4/3=1.8:x x:0.75=2:1.25 2/3:x=2/15:3/5 28:42=x:0.8
1、3.84:2.4=x:1/4
2.4x=3.84*1/4
x=0.4
2、 x:0.75=20.25:1/8
x:0.75=20.25*8
x=20.25*8*3/4
=121.5
3、3.6:4/3=1.8:x
3.6x=1.8*4/3
x=3/8
4、x:0.75=2:1.25
1.25x=0.75*2
x=1.5/1.25=6/5
5、2/3:x=2/15:3/5
2/15x=3/5*2/3
x=3
6、28:42=x:0.8
42x=28*0.8
x=8/15