题目内容
解方程.
| x-k.k=6.9. |
根据题意可8:
(8)
x-
x=80,
x=80,
x÷
=80÷
,
x=55;
(5)5.5x-8.8=0.8,
5.5x-8.8+8.8=0.8+8.8,
5.5x=5,
5.5x÷5.5=5÷5.5,
x=0.8.
(8)
| 7 |
| 80 |
| 小 |
| 80 |
| 5 |
| 5 |
| 5 |
| 5 |
| 5 |
| 5 |
| 5 |
| 5 |
x=55;
(5)5.5x-8.8=0.8,
5.5x-8.8+8.8=0.8+8.8,
5.5x=5,
5.5x÷5.5=5÷5.5,
x=0.8.
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