题目内容
解方程.
①
=
②
:x=5:0.4
③2.75x十
×3=6
.
①
| x |
| 6 |
| 2.5 |
| 3 |
②
| 1 |
| 4 |
③2.75x十
| 3 |
| 2 |
| 1 |
| 2 |
①
=
②
:x=5:0.4 ③2.75x+
×3=6
3x=2.5×6 5x=0.4×
2.75x+
=
3x=15 5x=0.1 2.75x=
-
x=5 x=0.022.75x=2
x=
故答案是x=5,x=0.02,x=
| x |
| 6 |
| 2.5 |
| 3 |
| 1 |
| 4 |
| 3 |
| 2 |
| 1 |
| 2 |
3x=2.5×6 5x=0.4×
| 1 |
| 4 |
| 9 |
| 2 |
| 13 |
| 2 |
3x=15 5x=0.1 2.75x=
| 13 |
| 2 |
| 9 |
| 2 |
x=5 x=0.022.75x=2
x=
| 8 |
| 11 |
故答案是x=5,x=0.02,x=
| 8 |
| 11 |
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