题目内容
(1)4
+4.5×2
+
÷
;
(2)解方程:
x=
.
| 1 |
| 2 |
| 7 |
| 8 |
| 1 |
| 8 |
| 2 |
| 9 |
(2)解方程:
| 2 |
| 3 |
| 7 |
| 5 |
(1)原式=
+
×
+
×
=
(1+
+
)
=
(1+3)=18;
(2)x=
÷
x=
×
x=
=2
.
| 9 |
| 2 |
| 9 |
| 2 |
| 23 |
| 8 |
| 1 |
| 8 |
| 9 |
| 2 |
=
| 9 |
| 2 |
| 23 |
| 8 |
| 1 |
| 8 |
=
| 9 |
| 2 |
(2)x=
| 7 |
| 5 |
| 2 |
| 3 |
x=
| 7 |
| 5 |
| 3 |
| 2 |
x=
| 21 |
| 10 |
| 1 |
| 10 |
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