题目内容
解方程.
4÷
X=
x-1.4+1.6=3
:18%=
.
4÷
| 2 |
| 3 |
| 2 |
| 5 |
x-1.4+1.6=3
| 3 |
| 20 |
| 6.5 |
| x |
(1)4÷
X=
,
4×
X=
,
6X=
,
6X÷6=
÷6,
X=
×
,
X=
;
(2)x-1.4+1.6=3,
x+(1.6-1.4)=3,
x+0.2=3,
x+0.2-0.2=3-0.2,
x=2.8;
(3)
:18%=
,
5:6=6.5:x,
5x=6×6.5,
5x=39,
5x÷5=39÷5,
x=
.
| 2 |
| 3 |
| 2 |
| 5 |
4×
| 3 |
| 2 |
| 2 |
| 5 |
6X=
| 2 |
| 5 |
6X÷6=
| 2 |
| 5 |
X=
| 2 |
| 5 |
| 1 |
| 6 |
X=
| 1 |
| 15 |
(2)x-1.4+1.6=3,
x+(1.6-1.4)=3,
x+0.2=3,
x+0.2-0.2=3-0.2,
x=2.8;
(3)
| 3 |
| 20 |
| 6.5 |
| x |
5:6=6.5:x,
5x=6×6.5,
5x=39,
5x÷5=39÷5,
x=
| 39 |
| 5 |
练习册系列答案
相关题目