问题
解答题
[2
|
答案
[2
+(33 14
-1.75)÷1.56]÷1 7
,1 28
=[2
+(33 14
-11 7
)÷1.56]÷3 4
,1 28
=(
+31 14
÷39 28
)÷39 25
,1 28
=(
+31 14
×39 28
)×28,25 39
=(
+31 14
)×28,25 28
=
×28+31 14
×28,25 28
=62+25,
=87,