题目内容
x÷
|
| 1÷(
|
(1)x÷
+
=1
,
x÷
+
-
=1
-
,
x÷
=
,
x÷
×
=
×
,
x=
;
(2)
x+0.5x=2,
x=2,
x÷
=2÷
,
x=
;
(3)1÷(
+x)=3,
1÷(
+x)×(
+x)=3(
+x),
3(
+x)=1,
3(
+x)÷3=1÷3,
+x=
,
+x-
=
-
,
x=
.
| 2 |
| 3 |
| 1 |
| 3 |
| 4 |
| 5 |
x÷
| 2 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
| 4 |
| 5 |
| 1 |
| 3 |
x÷
| 2 |
| 3 |
| 22 |
| 15 |
x÷
| 2 |
| 3 |
| 2 |
| 3 |
| 22 |
| 15 |
| 2 |
| 3 |
x=
| 44 |
| 45 |
(2)
| 2 |
| 3 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
x=
| 12 |
| 7 |
(3)1÷(
| 1 |
| 15 |
1÷(
| 1 |
| 15 |
| 1 |
| 15 |
| 1 |
| 15 |
3(
| 1 |
| 15 |
3(
| 1 |
| 15 |
| 1 |
| 15 |
| 1 |
| 3 |
| 1 |
| 15 |
| 1 |
| 15 |
| 1 |
| 3 |
| 1 |
| 15 |
x=
| 4 |
| 15 |
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