题目内容
| (1)4Χ+2(Χ-4)=22 | (2)
| (3)(Χ+3)×2-6=8 | (4)0.36×5-
|
①4x+2(x-4)=22,
4x+2x-8=22,
6x=30,
x=5;
②
=56,
×12=56×12,
x-1=672,
x-1+1=672+1,
x=673;
③(x+3)×2-6=8,
2x+6-6=8,
2x=8,
x=4;
④0.36×5-
Χ=
,
1.8-
x=
,
1.8-
x+
x=
+
x,
1.8=
+
x,
+
x-
=1.8-
,
x=1.2,
x÷
=1.2÷
,
x=1.6.
4x+2x-8=22,
6x=30,
x=5;
②
| Χ-1 |
| 12 |
| Χ-1 |
| 12 |
x-1=672,
x-1+1=672+1,
x=673;
③(x+3)×2-6=8,
2x+6-6=8,
2x=8,
x=4;
④0.36×5-
| 3 |
| 4 |
| 3 |
| 5 |
1.8-
| 3 |
| 4 |
| 3 |
| 5 |
1.8-
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 5 |
| 3 |
| 4 |
1.8=
| 3 |
| 5 |
| 3 |
| 4 |
| 3 |
| 5 |
| 3 |
| 4 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
x=1.6.
练习册系列答案
相关题目