
求未知数x.110:X=18:14 34X-14=12&n...
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(1)
:x=
:
,
x=
×
,
x×8=
×8,
x=
;
(2)
x-
=
,
x-
+
=
+
,
x×
=
×
,
x=1;
(3)
x+
x=
,
x=
,
x×
=
×
,
x=
.
1 |
10 |
1 |
8 |
1 |
4 |
1 |
8 |
1 |
10 |
1 |
4 |
1 |
8 |
1 |
40 |
x=
1 |
5 |
(2)
3 |
4 |
1 |
4 |
1 |
2 |
3 |
4 |
1 |
4 |
1 |
4 |
1 |
2 |
1 |
4 |
3 |
4 |
4 |
3 |
3 |
4 |
4 |
3 |
x=1;
(3)
2 |
3 |
3 |
5 |
7 |
10 |
19 |
15 |
7 |
10 |
19 |
15 |
15 |
19 |
7 |
10 |
15 |
19 |
x=
21 |
38 |
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