题目内容
求未知数x的值:
x+
x=
9(x-1)=3(x+8)
0.372:0744=
:x.
x+
| 1 |
| 2 |
| 4 |
| 5 |
9(x-1)=3(x+8)
0.372:0744=
| 1 |
| 10 |
(1)x+
x=
,
(1+
)x=
,
x=
,
x×
=
×
,
x=
;
(2)9(x-1)=3(x+8),
9x-9=3x+24,
9x-9+9=3x+24+9,
9x=3x+33,
9x-3x=3x+33-3x,
6x=33,
6x÷6=33÷6,
x=
;
(3)0.372:0.744=
:x,
0.372x=0.744×0.1,
0.372x÷0.372=0.0744÷0.372,
x=0.2.
| 1 |
| 2 |
| 4 |
| 5 |
(1+
| 1 |
| 2 |
| 4 |
| 5 |
| 3 |
| 2 |
| 4 |
| 5 |
| 3 |
| 2 |
| 2 |
| 3 |
| 4 |
| 5 |
| 2 |
| 3 |
x=
| 8 |
| 15 |
(2)9(x-1)=3(x+8),
9x-9=3x+24,
9x-9+9=3x+24+9,
9x=3x+33,
9x-3x=3x+33-3x,
6x=33,
6x÷6=33÷6,
x=
| 11 |
| 2 |
(3)0.372:0.744=
| 1 |
| 10 |
0.372x=0.744×0.1,
0.372x÷0.372=0.0744÷0.372,
x=0.2.
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