题目内容
解方程
x÷
=
x=48
22x-
=
-2x=
.
x÷
| 14 |
| 15 |
| 1 |
| 7 |
| 3 |
| 4 |
22x-
| 3 |
| 40 |
| 19 |
| 40 |
| 3 |
| 4 |
| 1 |
| 4 |
(1)x÷
=
x÷
×
=
×
x=
;
(2)
x=48
x÷
=48÷
x=64;
(3)22x-
=
22x-
+
=
+
22x=
22x÷22=
÷22
x=
;
(4)
-2x=
-2x+2x=
+2x
=
+2x
-
=
+2x-
=2x
÷2=2x÷2
x=
.
| 14 |
| 15 |
| 1 |
| 7 |
x÷
| 14 |
| 15 |
| 14 |
| 15 |
| 1 |
| 7 |
| 14 |
| 15 |
x=
| 2 |
| 15 |
(2)
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
x=64;
(3)22x-
| 3 |
| 40 |
| 19 |
| 40 |
22x-
| 3 |
| 40 |
| 3 |
| 40 |
| 19 |
| 40 |
| 3 |
| 40 |
22x=
| 11 |
| 20 |
22x÷22=
| 11 |
| 20 |
x=
| 1 |
| 40 |
(4)
| 3 |
| 4 |
| 1 |
| 4 |
| 3 |
| 4 |
| 1 |
| 4 |
| 3 |
| 4 |
| 1 |
| 4 |
| 3 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 2 |
x=
| 1 |
| 4 |
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