题目内容
解方程和比例
:
=x:15
x÷
+7=103.
| 4 |
| 9 |
| 1 |
| 6 |
x÷
| 1 |
| 3 |
(1)
:
=x:15
x=
×15
x÷
=
÷
x=40;
(2)x÷
+7=103
x÷
+7-7=103-7
x÷
×
=96×
x=32.
| 4 |
| 9 |
| 1 |
| 6 |
| 1 |
| 6 |
| 4 |
| 9 |
| 1 |
| 6 |
| 1 |
| 6 |
| 20 |
| 3 |
| 1 |
| 6 |
x=40;
(2)x÷
| 1 |
| 3 |
x÷
| 1 |
| 3 |
x÷
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
x=32.
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