题目内容
解方程.
(1)
:0.8=x:48
(2)
x+
x=42.
(1)
| 1 |
| 6 |
(2)
| 2 |
| 3 |
| 1 |
| 2 |
(1)
:0.8=χ:48,
0.8x=48×
,
0.8x÷0.8=8÷0.8,
x=10,
(2)
χ+
χ=42,
x=42,
x×
=42×
,
x=36.
| 1 |
| 6 |
0.8x=48×
| 1 |
| 6 |
0.8x÷0.8=8÷0.8,
x=10,
(2)
| 2 |
| 3 |
| 1 |
| 2 |
| 7 |
| 6 |
| 7 |
| 6 |
| 6 |
| 7 |
| 6 |
| 7 |
x=36.
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