题目内容
解方程.
| 2x+4=6 | 35x+13x=9.6 |
|
|
(1)2x+4=6,
2x+4-4=6-4,
2x=2,
2x÷2=2÷2,
x=1;
(2)35x+13x=9.6,
48x=9.6,
48x÷48=9.6÷48,
x=0.2;
(3)
x-
x=
,
x=
,
x÷
=
÷
,
x=1
;
(4)
x÷14=
,
x÷14×14=
×14,
x÷
=7÷
,
x=9.
2x+4-4=6-4,
2x=2,
2x÷2=2÷2,
x=1;
(2)35x+13x=9.6,
48x=9.6,
48x÷48=9.6÷48,
x=0.2;
(3)
| 3 |
| 4 |
| 2 |
| 5 |
| 7 |
| 12 |
| 7 |
| 20 |
| 7 |
| 12 |
| 7 |
| 20 |
| 7 |
| 20 |
| 7 |
| 12 |
| 7 |
| 20 |
x=1
| 2 |
| 3 |
(4)
| 7 |
| 9 |
| 1 |
| 2 |
| 7 |
| 9 |
| 1 |
| 2 |
| 7 |
| 9 |
| 7 |
| 9 |
| 7 |
| 9 |
x=9.
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