题目内容
求未知数X.
X÷
=
X-0.8X-6=16
X:
=
:
.
X÷
| 3 |
| 10 |
| 3 |
| 100 |
X-0.8X-6=16
X:
| 1 |
| 2 |
| 2 |
| 5 |
| 7 |
| 8 |
(1)x÷
=
,
x÷
×
=
×
,
x=
;
(2)x-0.8x-6=16,
0.2x=22,
0.2x÷0.2=22÷0.2,
x=110;
(3)x:
=
:
x=
×
,
x=
,
x÷
=
÷
,
x=
.
| 3 |
| 10 |
| 3 |
| 100 |
x÷
| 3 |
| 10 |
| 3 |
| 10 |
| 3 |
| 100 |
| 3 |
| 10 |
x=
| 9 |
| 1000 |
(2)x-0.8x-6=16,
0.2x=22,
0.2x÷0.2=22÷0.2,
x=110;
(3)x:
| 1 |
| 2 |
| 2 |
| 5 |
| 7 |
| 8 |
| 7 |
| 8 |
| 2 |
| 5 |
| 1 |
| 2 |
| 7 |
| 8 |
| 1 |
| 5 |
| 7 |
| 8 |
| 7 |
| 8 |
| 1 |
| 5 |
| 7 |
| 8 |
x=
| 8 |
| 35 |
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