第1个回答 2012-02-29
1)7:x=4:3
x=7/(4/3)
x=7*3/4
x=21/4
(2)x:3/7=14:25
x=14/25*3/7
x=6/25
(3)x/12=5/4
x=5/4*12
x=5*3
x=15
(4)x/1.6=5/0.8
x=5/0.8*1.6
x=5*2
x=10
(5)0.6:4.8=12: x
x=12/(0.6/4.8)
x=12/0.6*4.8
x=96
(6)5/3:x=4/5:9/20
x=5/3/(4/5*20/9)
x=5/3/(16/9)
x=5/3*9/16
x=15/16本回答被提问者采纳