题目内容
解方程:
3ⅹ+
=
27÷
ⅹ=
ⅹ-
ⅹ=
.
3ⅹ+
| 1 |
| 5 |
| 4 |
| 5 |
27÷
| 1 |
| 3 |
| 9 |
| 5 |
ⅹ-
| 3 |
| 4 |
| 2 |
| 3 |
(1)3ⅹ+
=
,
3ⅹ+
-
=
-
,
3ⅹ÷3=
÷3,
ⅹ=
;
(2)27÷
ⅹ=
,
27÷
ⅹ×
x=
×
x,
27ⅹ
=
x×
,
x=45;
(3)ⅹ-
ⅹ=
,
ⅹ=
,
ⅹ×4=
×4,
ⅹ=2
.
| 1 |
| 5 |
| 4 |
| 5 |
3ⅹ+
| 1 |
| 5 |
| 1 |
| 5 |
| 4 |
| 5 |
| 1 |
| 5 |
3ⅹ÷3=
| 3 |
| 5 |
ⅹ=
| 1 |
| 5 |
(2)27÷
| 1 |
| 3 |
| 9 |
| 5 |
27÷
| 1 |
| 3 |
| 1 |
| 3 |
| 9 |
| 5 |
| 1 |
| 3 |
27ⅹ
| 5 |
| 3 |
| 3 |
| 5 |
| 5 |
| 3 |
x=45;
(3)ⅹ-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 4 |
| 2 |
| 3 |
ⅹ=2
| 2 |
| 3 |
练习册系列答案
相关题目