题目内容
求未知数,我没问题!
(1)7x-3.5=10.5(2)x:
=
:
.
(1)7x-3.5=10.5(2)x:
| 1 |
| 2 |
| 2 |
| 5 |
| 7 |
| 8 |
(1)7x-3.5=10.5,
7x-3.5+3.5=10.5+3.5,
7x÷7=14÷7,
x=2;
(2)x:
=
:
,
x=
×
,
x×
=
×
,
x=
.
7x-3.5+3.5=10.5+3.5,
7x÷7=14÷7,
x=2;
(2)x:
| 1 |
| 2 |
| 2 |
| 5 |
| 7 |
| 8 |
| 7 |
| 8 |
| 1 |
| 2 |
| 2 |
| 5 |
| 7 |
| 8 |
| 8 |
| 7 |
| 1 |
| 5 |
| 8 |
| 7 |
x=
| 8 |
| 35 |
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