题目内容
解方程(比例)
4x+3×0.7=6.5 x:8=
:1
.
4x+3×0.7=6.5 x:8=
| 3 |
| 4 |
| 1 |
| 5 |
(1)4x+3×0.7=6.5,
4x+2.1=6.5,
4x+2.1-2.1=6.5-2.1,
4x=4.4,
4x÷4=4.4÷4,
x=1.1;
(2)x:8=
:1
,
1
x=8×
,
1
x=6,
1
x×
=6×
,
x=5.
4x+2.1=6.5,
4x+2.1-2.1=6.5-2.1,
4x=4.4,
4x÷4=4.4÷4,
x=1.1;
(2)x:8=
| 3 |
| 4 |
| 1 |
| 5 |
1
| 1 |
| 5 |
| 3 |
| 4 |
1
| 1 |
| 5 |
1
| 1 |
| 5 |
| 5 |
| 6 |
| 5 |
| 6 |
x=5.
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