用绳子测桥高,2折量还余8米;如果3折量还余1米.求桥高和绳长各多少米?我好急
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/24 21:08:29
用绳子测桥高,2折量还余8米;如果3折量还余1米.求桥高和绳长各多少米?我好急用绳子测桥高,2折量还余8米;如果3折量还余1米.求桥高和绳长各多少米?我好急用绳子测桥高,2折量还余8米;如果3折量还余
用绳子测桥高,2折量还余8米;如果3折量还余1米.求桥高和绳长各多少米?我好急
用绳子测桥高,2折量还余8米;如果3折量还余1米.求桥高和绳长各多少米?
我好急
用绳子测桥高,2折量还余8米;如果3折量还余1米.求桥高和绳长各多少米?我好急
设x=绳子长,y=桥高.
x/2-8=y.(1)
x/3-1=y.(2)
把(1)带入(2) 解得 x=42
把x=42带回(1) 解得y=13