解比例 2/8=9/x 1/2:1/5=1/4:x 1.25/0.25=x/1.6 40:x=2.5:15 1/2:x=5:16 3/4:1/5=20:x
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![解比例 2/8=9/x 1/2:1/5=1/4:x 1.25/0.25=x/1.6 40:x=2.5:15 1/2:x=5:16 3/4:1/5=20:x](/uploads/image/z/372553-25-3.jpg?t=%E8%A7%A3%E6%AF%94%E4%BE%8B+2%2F8%3D9%2Fx+1%2F2%3A1%2F5%3D1%2F4%3Ax+1.25%2F0.25%3Dx%2F1.6+40%3Ax%3D2.5%3A15+1%2F2%3Ax%3D5%3A16+3%2F4%3A1%2F5%3D20%3Ax)
解比例 2/8=9/x 1/2:1/5=1/4:x 1.25/0.25=x/1.6 40:x=2.5:15 1/2:x=5:16 3/4:1/5=20:x
解比例 2/8=9/x 1/2:1/5=1/4:x 1.25/0.25=x/1.6 40:x=2.5:15 1/2:x=5:16 3/4:1/5=20:x
解比例 2/8=9/x 1/2:1/5=1/4:x 1.25/0.25=x/1.6 40:x=2.5:15 1/2:x=5:16 3/4:1/5=20:x
2/8=9/x
2x=72
x=36
1/2:1/5=1/4:x
1/2x=1/20
x=1/10
1.25/0.25=x/1.6
1.25*1.6=0.25*x
x=8
40:x=2.5:15
2.5*x=40*15
2.5x=600
x=240
1/2:x=5:16
5x=1/2*16
x=1.6
3/4:1/5=20:x
3/4x=20*1/5
x=16/3
2/8=9/x
2x=72
x=36
1/2:1/5=1/4:x
1/5 X 1/4=1/2 X x
1/2x=1/20
x=1/10
1.25/0.25=x/1.6
0.25x=1.25 X 1.6
0.25x=2
x=8
40:x=2.5:15
2.5x=40X15
2.5x=600<...
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2/8=9/x
2x=72
x=36
1/2:1/5=1/4:x
1/5 X 1/4=1/2 X x
1/2x=1/20
x=1/10
1.25/0.25=x/1.6
0.25x=1.25 X 1.6
0.25x=2
x=8
40:x=2.5:15
2.5x=40X15
2.5x=600
x=240
1/2:x=5:16
0.5:x=5:16
5x=16X0.5
5x=8
x=1.6
3/4:1/5=20:x
3/4x=1/5 X 20
3/4 x=4
x=4 X 4/3
x=16/3
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