题目内容
| 7.36X÷2=2.16 | X+
| ||||||||
9X-
| X-
| ||||||||
2X+7X=
|
|
(1)7.36x÷2=2.16
7.36x÷2×2=2.16×2
7.36x÷7.36=4.32÷7.36
x=
;
(2)x+
x=
x÷
=
÷
x=
;
(3)9.x-
x=
9x-
x=
x÷
=
÷
x=
;
(4)x-
=
x-
+
=
-
x=
;
(5)2x+7x=
9x÷9=
÷9
x=
;
(6)
+x=
+x-
=
-
x=
.
7.36x÷2×2=2.16×2
7.36x÷7.36=4.32÷7.36
x=
| 27 |
| 46 |
(2)x+
| 2 |
| 7 |
| 3 |
| 4 |
| 9 |
| 7 |
| 9 |
| 7 |
| 3 |
| 4 |
| 9 |
| 7 |
x=
| 7 |
| 12 |
(3)9.x-
| 2 |
| 5 |
| 3 |
| 10 |
9x-
| 2 |
| 5 |
| 3 |
| 10 |
| 43 |
| 5 |
| 43 |
| 5 |
| 3 |
| 10 |
| 43 |
| 5 |
x=
| 3 |
| 86 |
(4)x-
| 2 |
| 5 |
| 3 |
| 10 |
x-
| 2 |
| 5 |
| 2 |
| 5 |
| 9 |
| 10 |
| 2 |
| 5 |
x=
| 1 |
| 2 |
(5)2x+7x=
| 9 |
| 10 |
9x÷9=
| 9 |
| 10 |
x=
| 1 |
| 10 |
(6)
| 3 |
| 8 |
| 2 |
| 5 |
| 3 |
| 8 |
| 3 |
| 8 |
| 2 |
| 5 |
| 3 |
| 8 |
x=
| 1 |
| 40 |
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