题目内容
| 2X+30%=9.2 | X-
| ||||||||
|
|
(1)2X+30%=9.2,
2X+30%-30%=9.2-30%,
2x=8.9,
2x÷2=8.9÷2,
x=4.45;
(2)X-
X=
,
x=
,
x÷
=
÷
,
x=
;
(3)
:
=X:
,
x=
×
,
x÷
=
÷
,
x=
;
(4)
X-5=10,
x-5+5=10+5,
x÷
=15÷
,
x=25.
2X+30%-30%=9.2-30%,
2x=8.9,
2x÷2=8.9÷2,
x=4.45;
(2)X-
| 1 |
| 3 |
| 1 |
| 6 |
| 2 |
| 3 |
| 1 |
| 6 |
| 2 |
| 3 |
| 2 |
| 3 |
| 1 |
| 6 |
| 2 |
| 3 |
x=
| 1 |
| 4 |
(3)
| 1 |
| 4 |
| 3 |
| 8 |
| 1 |
| 6 |
| 3 |
| 8 |
| 1 |
| 4 |
| 1 |
| 6 |
| 3 |
| 8 |
| 3 |
| 8 |
| 1 |
| 24 |
| 3 |
| 8 |
x=
| 1 |
| 9 |
(4)
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
x=25.
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