问题
解答题
|
答案
①14 =14 |
3 |
17 |
=4
;3 17
②4.2÷1.5-1.5×0.6,
=2.8-0.9,
=1.9;
③(4
-35 6
)÷(3 4
+4 13
),2 7
=(4
-310 12
)÷(9 12
+28 91
),26 91
=
÷13 12
,54 91
=
×13 12
,91 54
=
;1183 648
④51.6÷[(3
-1.25)×2 5
],4 5
=51.6÷[
×17 5
-4 5
×5 4
],4 5
=51.6÷[
-1],68 25
=51.6÷
,43 25
=51.6×
,25 43
=30.