一道英语应用题susan has 2 more than 4 times as many books as her ro

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?
hanting115bj 1年前 已收到3个回答 举报
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baosb 幼苗

共回答了16个问题采纳率：87.5% 举报

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

1年前

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linan2002 幼苗

共回答了1个问题 举报

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

1年前

2

isiland 春芽

共回答了23个问题采纳率：91.3% 举报

D

1年前

1
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