一道英语应用题susan has 2 more than 4 times as many books as her roommate has.together they have 42 books.which of the following equations could be use to determine the number of books susan has?A 4(x+2)=42B x+4(x+2)-42C 4x+2=42D 4x+2+x=42应

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一道英语应用题susan has 2 more than 4 times as many books as her roommate has.together they have 42 books.which of the following equations could be use to determine the number of books susan has?A 4(x+2)=42B x+4(x+2)-42C 4x+2=42D 4x+2+x=42应

一道英语应用题susan has 2 more than 4 times as many books as her roommate has.together they have 42 books.which of the following equations could be use to determine the number of books susan has?A 4(x+2)=42B x+4(x+2)-42C 4x+2=42D 4x+2+x=42应
一道英语应用题
susan has 2 more than 4 times as many books as her roommate has.together they have 42 books.which of the following equations could be use to determine the number of books susan has?
A 4(x+2)=42
B x+4(x+2)-42
C 4x+2=42
D 4x+2+x=42
应该选哪个呢?

一道英语应用题susan has 2 more than 4 times as many books as her roommate has.together they have 42 books.which of the following equations could be use to determine the number of books susan has?A 4(x+2)=42B x+4(x+2)-42C 4x+2=42D 4x+2+x=42应
D 4x+2+x=42
设苏珊的室友的书为x,而苏珊的书是其室友的书的4倍还多2,即4x+2;
另外,再加上一个室友的书x,总共当然是 4x+2 + x

D

D、
假设她室友有X本书,而苏珊的书比她的4倍还多两个,那苏珊就有4X+2本书,她们一共有42本书,所以就是4X+2+X=42