题目内容
解方程:
x×
=20×
25%+10x=
×
-
x=
.
x×
| 3 |
| 5 |
| 1 |
| 4 |
25%+10x=
| 4 |
| 5 |
| 4 |
| 5 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 20 |
(1)x×
=20×
x×
=5
x×
÷
=5÷
X=
(2)25%+10x=
25%+10x-25%=
-25%
10x=
10x÷10=
÷10
X=
(3)
×
-
X=
-
X=
-
X+
X=
+
X
=
+
X
+
X=
+
X-
=
-
X=
X÷
=
÷
X=
| 3 |
| 5 |
| 1 |
| 4 |
x×
| 3 |
| 5 |
x×
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
X=
| 25 |
| 3 |
(2)25%+10x=
| 4 |
| 5 |
25%+10x-25%=
| 4 |
| 5 |
10x=
| 11 |
| 20 |
10x÷10=
| 11 |
| 20 |
X=
| 11 |
| 200 |
(3)
| 4 |
| 5 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 20 |
| 1 |
| 5 |
| 1 |
| 2 |
| 1 |
| 20 |
| 1 |
| 5 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 20 |
| 1 |
| 2 |
| 1 |
| 5 |
| 1 |
| 20 |
| 1 |
| 2 |
| 1 |
| 20 |
| 1 |
| 2 |
| 1 |
| 5 |
| 1 |
| 20 |
| 1 |
| 2 |
| 1 |
| 20 |
| 1 |
| 5 |
| 1 |
| 20 |
| 1 |
| 2 |
| 3 |
| 20 |
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 20 |
| 1 |
| 2 |
X=
| 3 |
| 10 |
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