题目内容
解方程
|
| 24:
|
(1)
+5x=110,
x+10x=220,
11x=220,
11x÷11=220÷11,
x=20;
(2)
=
×
,
=7,
21x=28,
21x÷21=28÷21,
x=
;
(3)24:
=3.2:x,
24x=4.8,
24x÷24=4.8÷24,
x=0.2.
| x |
| 2 |
x+10x=220,
11x=220,
11x÷11=220÷11,
x=20;
(2)
| 28 |
| 3x |
| 49 |
| 9 |
| 9 |
| 7 |
| 28 |
| 3x |
21x=28,
21x÷21=28÷21,
x=
| 4 |
| 3 |
(3)24:
| 3 |
| 2 |
24x=4.8,
24x÷24=4.8÷24,
x=0.2.
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