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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