题目内容
你能求未知数x的.
①0.4×(x-1.5)=1.6
②
:
=x:
.
①0.4×(x-1.5)=1.6
②
| 1 |
| 6 |
| 3 |
| 4 |
| 9 |
| 4 |
(1)0.4×(x-1.5)=1.6,
0.4×(x-1.5)÷0.4=1.6÷0.4,
x-1.5=4,
x-1.5+1.5=4+1.5,
x=5.5;
(2)
:
=x:
,
x=
×
,
x÷
=
÷
,
x=
.
0.4×(x-1.5)÷0.4=1.6÷0.4,
x-1.5=4,
x-1.5+1.5=4+1.5,
x=5.5;
(2)
| 1 |
| 6 |
| 3 |
| 4 |
| 9 |
| 4 |
| 3 |
| 4 |
| 1 |
| 6 |
| 9 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 8 |
| 3 |
| 4 |
x=
| 1 |
| 2 |
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