Question

2:8=9:x x∶4分之1=4又3分之4 解比例

Answer 1

2:8=9:x

===> 2x=8×9

===> 2x=72

===> x=72÷2

===> x=36

x:(1/4)=4又3分之4=16/3

===> x=(16/3)×(1/4)

===> x=4/3