题目内容
解方程
|
|
(1)
x+
x=
,
(
+
)x=
,
x=
,
x×
=
×
,
x=
;
(2)
x+25%=10,
0.5x+0.25=10,
0.5x+0.25-0.25=10-0.25,
0.5x=9.75,
0.5x÷0.5=9.75÷0.5,
x=19.5.
| 3 |
| 4 |
| 1 |
| 2 |
| 9 |
| 8 |
(
| 3 |
| 4 |
| 1 |
| 2 |
| 9 |
| 8 |
| 5 |
| 4 |
| 9 |
| 8 |
| 5 |
| 4 |
| 4 |
| 5 |
| 9 |
| 8 |
| 4 |
| 5 |
x=
| 9 |
| 10 |
(2)
| 1 |
| 2 |
0.5x+0.25=10,
0.5x+0.25-0.25=10-0.25,
0.5x=9.75,
0.5x÷0.5=9.75÷0.5,
x=19.5.
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