题目内容
求未知数.
2x-
=0.5
x+
x=
:x=
:
.
2x-
| 1 |
| 2 |
x+
| 5 |
| 4 |
| 27 |
| 16 |
| 9 |
| 25 |
| 1 |
| 10 |
| 4 |
| 9 |
(1)2x-
=0.5
2x+
-
=0.5+
2x=1
2x÷2=1÷2
x=0.5
(2)x+
x=
x=
x×
=
×
x=
(3)
:x=
:
x=
×
x=
x×10=
×10
x=1.6
| 1 |
| 2 |
2x+
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
2x=1
2x÷2=1÷2
x=0.5
(2)x+
| 5 |
| 4 |
| 27 |
| 16 |
| 9 |
| 4 |
| 27 |
| 16 |
| 9 |
| 4 |
| 4 |
| 9 |
| 27 |
| 16 |
| 4 |
| 9 |
x=
| 3 |
| 4 |
(3)
| 9 |
| 25 |
| 1 |
| 10 |
| 4 |
| 9 |
| 1 |
| 10 |
| 9 |
| 25 |
| 4 |
| 9 |
| 1 |
| 10 |
| 4 |
| 25 |
| 1 |
| 10 |
| 4 |
| 25 |
x=1.6
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