题目内容
求Χ的值.
| Χ:
|
|
(1)
×(9-X)=
,
×(9-X)÷
=
÷
,
9-X=1,
9-X+X=1+X,
1+X=9,
1+X-1=9-1,
X=8;
(2)X:
=80:16,
16X=
×80,
16X=64,
16X÷16=64÷16,
X=4;
(3)
x+
x-6=
,
(
+
)x-6+6=
+6,
x=
,
x÷
=
÷
,
x=
×
,
x=4.
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
9-X=1,
9-X+X=1+X,
1+X=9,
1+X-1=9-1,
X=8;
(2)X:
| 4 |
| 5 |
16X=
| 4 |
| 5 |
16X=64,
16X÷16=64÷16,
X=4;
(3)
| 3 |
| 4 |
| 5 |
| 6 |
| 1 |
| 3 |
(
| 3 |
| 4 |
| 5 |
| 6 |
| 1 |
| 3 |
| 19 |
| 12 |
| 19 |
| 3 |
| 19 |
| 12 |
| 19 |
| 12 |
| 19 |
| 3 |
| 19 |
| 12 |
x=
| 19 |
| 3 |
| 12 |
| 19 |
x=4.
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