题目内容
解方程.
X+
| 5X-3×
|
| ||||||||||
X+
| 5X-3×
|
|
x+
x=121,
x=121,
x×
=121×
,
x=88;
5x-3×
=
,
5x-
=
,
5x-
+
=
+
,
5x÷5=
÷5,
x=
.
x÷
=12,
x÷
×
=12×
,
x×
=3×
,
x=4
.
| 3 |
| 8 |
| 11 |
| 8 |
| 11 |
| 8 |
| 8 |
| 11 |
| 8 |
| 11 |
x=88;
5x-3×
| 5 |
| 21 |
| 5 |
| 7 |
5x-
| 5 |
| 7 |
| 5 |
| 7 |
5x-
| 5 |
| 7 |
| 5 |
| 7 |
| 5 |
| 7 |
| 5 |
| 7 |
5x÷5=
| 10 |
| 7 |
x=
| 2 |
| 7 |
| 2 |
| 3 |
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 2 |
| 3 |
| 3 |
| 2 |
| 3 |
| 2 |
x=4
| 1 |
| 2 |
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