题目内容
直接写出计算结果
(1)(
+
)÷
+
=
(2)若
x+
x=42×30%,则x=
(1)(
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 4 |
| 7 |
| 10 |
(2)若
| 2 |
| 3 |
| 1 |
| 2 |
(1)(
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 4 |
| 7 |
| 10 |
=
| 21 |
| 20 |
| 7 |
| 4 |
| 7 |
| 10 |
=
| 3 |
| 5 |
| 7 |
| 10 |
=
| 13 |
| 10 |
(2)
| 2 |
| 3 |
| 1 |
| 2 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
x=10.8.
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