
解方程:(1)(13?113)×6-7÷13(2)59÷[1÷(110-9%)](3)34x-45+0.2=12.
解方程:(1)(13?113)×6-7÷13(2)59÷[1÷(110-9%)](3)34x-45+0.2=12....
解方程:(1)(13?113)×6-7÷13(2)59÷[1÷(110-9%)](3)34x-45+0.2=12.
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(1)(
?
)×6-7÷13,
=
×6-
×6-7÷13,
=2-
-
,
=2-(
+
),
=2-1,
=1;
(2)59÷[1÷(
-9%)],
=59÷[1÷(10%-9%)],
=59÷[1÷1%],
=59÷100,
=0.59;
(3)
x-
+0.2=
,
x-
+
=
,
x-
=
,
x=
,
x=
÷
,
x=
.
1 |
3 |
1 |
13 |
=
1 |
3 |
1 |
13 |
=2-
6 |
13 |
7 |
13 |
=2-(
6 |
13 |
7 |
13 |
=2-1,
=1;
(2)59÷[1÷(
1 |
10 |
=59÷[1÷(10%-9%)],
=59÷[1÷1%],
=59÷100,
=0.59;
(3)
3 |
4 |
4 |
5 |
1 |
2 |
3 |
4 |
4 |
5 |
1 |
5 |
1 |
2 |
3 |
4 |
3 |
5 |
1 |
2 |
3 |
4 |
11 |
10 |
x=
11 |
10 |
3 |
4 |
x=
22 |
15 |
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