有没有人可以用英文帮我解释下这个方程这么列At a bake sale,a total of 29 cakes and pies were sold for $283.The price of each cake was $9.50,and the price of each pie was $10.How many cakes and how many pies were sold?9.5x+10(29-x)=
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有没有人可以用英文帮我解释下这个方程这么列At a bake sale,a total of 29 cakes and pies were sold for $283.The price of each cake was $9.50,and the price of each pie was $10.How many cakes and how many pies were sold?9.5x+10(29-x)=
有没有人可以用英文帮我解释下这个方程这么列
At a bake sale,a total of 29 cakes and pies were sold for $283.The price of each cake was $9.50,and the price of each pie was $10.How many cakes and how many pies were sold?
9.5x+10(29-x)=283为什么要这么列,
有没有人可以用英文帮我解释下这个方程这么列At a bake sale,a total of 29 cakes and pies were sold for $283.The price of each cake was $9.50,and the price of each pie was $10.How many cakes and how many pies were sold?9.5x+10(29-x)=
这个题目的大致意思是：
一家面包店,现在一共有29蛋糕和派,总计卖了283美元.其中,蛋糕的售价为9.50元/块,派的售价为10元/块.问：蛋糕和派分别有多少块?
设有X块蛋糕,则派有（29-X）块.
9.5乘以X是蛋糕售出的总收入；10乘以（29-X）则是派的总收入.
两者相加得出283的总收入.
所以有：9.5x+10(29-x)=283
计算：9.5X+290-10X=283
-0.5X=-7
X=14
蛋糕有14块,派有15块.