题目内容
解方程.
| 80%X-60%X=32 |
|
|
①80%x-60%x=32,
x(0.8-0.6)=32,
0.2x=32,
0.2x÷0.2=32÷0.2,
x=160;
②
÷x=
,
÷x×x=
x,
x=
,
x÷
=
÷
,
x=
;
③
-5x=
,
-5x+5x=
+5x,
+5x=
,
+5x-
=
-
,
5x=
,
5x÷5=
÷5,
x=
.
x(0.8-0.6)=32,
0.2x=32,
0.2x÷0.2=32÷0.2,
x=160;
②
| 3 |
| 8 |
| 3 |
| 5 |
| 3 |
| 8 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 8 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 8 |
| 3 |
| 5 |
x=
| 5 |
| 8 |
③
| 5 |
| 6 |
| 5 |
| 12 |
| 5 |
| 6 |
| 5 |
| 12 |
| 5 |
| 12 |
| 5 |
| 6 |
| 5 |
| 12 |
| 5 |
| 12 |
| 5 |
| 6 |
| 5 |
| 12 |
5x=
| 5 |
| 12 |
5x÷5=
| 5 |
| 12 |
x=
| 1 |
| 12 |
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