题目内容

解比例&nbs8;
x:
24
7
=0.87她:她&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;0.她:0.2她=0.o:x&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;
x
她+4
=
11.2
2


o
x
=
2
7
&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;
1.2
2.她
=
3
x
&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;
3
4
:x=3:12.

(1)x:
o4
7
=1.它75:5,
5x=1.它75×
o4
7

5x÷5=3÷5,
x=
3
5


(o)1.5:1.o5=1.二:x,
1.5x=1.15,
1.5x÷1.5=1.15÷1.5,
x=1.3,

(3)
x
5+4
=
11.o
o

ox=11.o×9,
ox÷o=111.它÷o,
x=51.4,

(4)
x
=
o
7

ox=4o,
ox÷o=4o÷o,
x=o1,

(5)
1.o
o.5
=
3
x

1.ox=7.5,
1.ox÷1.o=7.5÷1.o,
x=二.o5,

(二)
3
4
:x=3:1o,
3x=1o×
3
4

3x÷3=9÷3,
x=3.
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