题目内容
解比例.
4∶x=3.25∶6.5
=x∶
解比例
6.5∶x=3.25∶4
3.5∶0.4=x∶8
(1)1.5:x-3:8 (2)0.75:4-9:x (3):6-x:8,
(4):x=7:12 (5)0.9:x=2.4:8
(1) (2)
(3)8:5=20:x (4):=x:
(5)0.3:0.4=1.65:x (6)0.7:x=4.9:1