题目内容
解方程.
|
| ⅹ÷
| ||||||||||
| 1.5x=2.25 | x÷
|
(1)
ⅹ=6,
ⅹ÷
=6÷
,
x=18;
(2)
ⅹ=
,
ⅹ÷
=
÷
,
x=1
;
(3)ⅹ÷
=
,
ⅹ÷
×
=
×
,
x=
;
(4)
x=
,
x÷
=
÷
,
x=1
;
(5)1.5x=2.25,
1.5x÷1.5=2.25÷1.5,
x=1.5;
(6)x÷
=
,
x÷
×
=
×
,
x=
.
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
x=18;
(2)
| 4 |
| 5 |
| 16 |
| 15 |
| 4 |
| 5 |
| 4 |
| 5 |
| 16 |
| 15 |
| 4 |
| 5 |
x=1
| 1 |
| 3 |
(3)ⅹ÷
| 11 |
| 8 |
| 16 |
| 33 |
ⅹ÷
| 11 |
| 8 |
| 11 |
| 8 |
| 16 |
| 33 |
| 11 |
| 8 |
x=
| 2 |
| 3 |
(4)
| 7 |
| 10 |
| 4 |
| 3 |
| 7 |
| 10 |
| 7 |
| 10 |
| 4 |
| 3 |
| 7 |
| 10 |
x=1
| 19 |
| 21 |
(5)1.5x=2.25,
1.5x÷1.5=2.25÷1.5,
x=1.5;
(6)x÷
| 5 |
| 8 |
| 10 |
| 17 |
x÷
| 5 |
| 8 |
| 5 |
| 8 |
| 10 |
| 17 |
| 5 |
| 8 |
x=
| 25 |
| 68 |
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