问题
解答题
2.25×4
|
答案
2.25×4
+774 5
×0.48-(91 2
×8 17
+2 23
×2 17
),9 23
=2.25×4.8+77.5×0.48-(9
×8 17
+2 23
×9 17
),2 23
=2.25×4.8+77.5×4.8-(9
+8 17
)×9 17
,2 23
=(2.25+7.75)×4.8-10×
,2 23
=48-
,20 23
=47
.3 23