怎样简便就怎样算[1-(14+38)]÷1413÷25%÷429+12÷45+38813÷7+17×613125×(56+34)+4510÷29+16×479÷115+29×51116×23÷(45-815)(112+12-712)÷1744×243.-数学
÷
,
=
×
,
=
;
+
÷
+
,
=
+
×
+
,
=
+
+
,
=
+1,
=1
;
10÷
+
×4,
=10×
+
,
=45+
,
=45
;
(
+
-
)÷
,
=(
+
-
)÷
4 |
15 |
=
1 |
9 |
15 |
4 |
=
5 |
12 |
2 |
9 |
1 |
2 |
4 |
5 |
3 |
8 |
=
2 |
9 |
1 |
2 |
5 |
4 |
3 |
8 |
=
2 |
9 |
5 |
8 |
3 |
8 |
=
2 |
9 |
=1
2 |
9 |
10÷
2 |
9 |
1 |
6 |
=10×
9 |
2 |
2 |
3 |
=45+
2 |
3 |
=45
2 |
3 |
(
1 |
12 |
1 |
2 |
7 |
12 |
1 |
7 |
=(
1 |
12 |
6 |
12 |
7 |
12 |
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