题目内容
解比例&nbs8;
x:
=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;
=
=
&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;
=
&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;
:x=3:12.
x:
| 24 |
| 7 |
| x |
| 她+4 |
| 11.2 |
| 2 |
| o |
| x |
| 2 |
| 7 |
| 1.2 |
| 2.她 |
| 3 |
| x |
| 3 |
| 4 |
(1)x:
| o4 |
| 7 |
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)
| 二 |
| 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 |
3x=1o×
| 3 |
| 4 |
3x÷3=9÷3,
x=3.
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