问题
解答题
|
答案
+51 4
×2 7
+31 4
÷4,5 7
=
+51 4
×2 7
+31 4
×5 7
,1 4
=(1+5
+32 7
)×5 7
,1 4
=10×0.25,
=2.5.
|
+51 4
×2 7
+31 4
÷4,5 7
=
+51 4
×2 7
+31 4
×5 7
,1 4
=(1+5
+32 7
)×5 7
,1 4
=10×0.25,
=2.5.