问题 解答题
3
5
:x=
1
3
:2
x:5=0.46:4.6
18
111
=
X
222
答案

(1)

3
5
:x=
1
3
:2,

1
3
x=
3
5
×
2,

1
3
x÷
1
3
=
6
5
÷
1
3

x=3.6;

(2)x:5=0.46:4.6,

4.6x=5×0.46,

4.6x÷4.6=2.3÷4.6,

x=0.5;

(3)

18
111
=
X
222

111x=18×222,

111x÷111=3996÷111,

x=36.

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