新初一暑假作业 数学 动脑筋题 69页
\u65b0\u521d\u4e00\u6691\u5047\u4f5c\u4e1a \u6570\u5b66 \u52a8\u8111\u7b4b\u9898\u8bbe\u5730\u7403\u534a\u5f84\u4e3aR\u7c73\uff0c\u5219\u540e\u67b6\u8bbe\u7684\u94a2\u4e1d\u5708\u534a\u5f84\u4e3a\uff08R+1.7\uff09\u7c73
\u539f\u5148\u7684\u94a2\u4e1d\u7684\u957f\u5ea6\u5373\u5730\u7403\u8d64\u9053\u5706\u5468\u957f=2*\u5706\u5468\u7387*R
\u540e\u6765\u7684\u94a2\u4e1d\u957f=2*\u5706\u5468\u7387*\uff08R+1.7\uff09
\u4e24\u8005\u76f8\u51cf\u5373\u89e3\u5f97 \u6700\u5c11\u898110.676\u7c73\uff08\u4e5f\u5c31\u662f2*1.7*\u5706\u5468\u7387\uff09
\u8bbe\u5b66\u751fx\u5c81\uff0c\u8001\u5e08y\u5c81\uff0c\u5219\u5e74\u9f84\u5dee\u4e3ay-x
1.x+(y-x)=1
2.y+(y-x)=40
\u7531\u4ee5\u4e0a\u4e24\u4e2a\u65b9\u7a0b\u89e3\u5f97x=14\uff0cy=27
