题目内容
解方程:
6×1.5+0.4x=17;
4:
=x:
;
x-
x=
.
6×1.5+0.4x=17;
4:
| 2 |
| 3 |
| 1 |
| 6 |
x-
| 1 |
| 4 |
| 5 |
| 6 |
(1)6×1.5+0.4x=17,
9+0.4x=17,
9+0.4x-9=17-9,
0.4x÷0.4=8÷0.4,
x=20;
(2)4:
=x:
,
x=4×
,
x×
=
×
,
x=1;
(3)x-
x=
,
x=
,
x×
=
×
,
x=1
.
9+0.4x=17,
9+0.4x-9=17-9,
0.4x÷0.4=8÷0.4,
x=20;
(2)4:
| 2 |
| 3 |
| 1 |
| 6 |
| 2 |
| 3 |
| 1 |
| 6 |
| 2 |
| 3 |
| 3 |
| 2 |
| 2 |
| 3 |
| 3 |
| 2 |
x=1;
(3)x-
| 1 |
| 4 |
| 5 |
| 6 |
| 3 |
| 4 |
| 5 |
| 6 |
| 3 |
| 4 |
| 4 |
| 3 |
| 5 |
| 6 |
| 4 |
| 3 |
x=1
| 1 |
| 9 |
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