小华看一本书，打开书，看到左右两页的页码的和是185，请你想一想，小华打开的是哪两页？（请亲们用奥
\u5c0f\u534e\u770b\u4e00\u672c\u4e66\uff0c\u6253\u5f00\u4e66\u540e\uff0c\u5de6\u53f3\u4e24\u9875\u7684\u9875\u7801\u7684\u548c\u662f185\u3002\u5c0f\u534e\u6253\u5f00\u7684\u662f\u54ea\u4e24\u9875\uff1f\uff1f\uff1f(185-1)/2\u7b49\u4e8e92
\u6240\u4ee5\u4e00\u4e2a\u662f92\u4e00\u4e2a\u662f92+1
\u89e3\u8bbe\uff1b\u5de6\u9762\u7684\u4e3a\u7b2cX\u9875 \u3002
X + (X + 1) = 185
x = 92
\u5de6\u9762\u4e3a\u7b2c92\u9875\uff0c\u53f3\u9762\u4e3a\u7b2c93\u9875\uff0c
..... \u5f88\u9ad8\u5174\u4e3a\u60a8\u89e3\u7b54\uff0c\u8fd8\u6709\u7591\u95ee\u8bf7\u7ee7\u7eed\u8ffd\u95ee\uff0c\u611f\u8c22\u60a8\u7684\u53ca\u65f6\u91c7\u7eb3\uff01
所以，右面的页码为x+1
由题意得x+x+1=185
解得x=92
绛旓細鎵浠ワ紝鍙抽潰鐨勯〉鐮佷负x+1 鐢遍鎰忓緱x+x+1=185 瑙ｅ緱x=92
绛旓細绛旓細鐜茬幉鎵撳紑鐨勯〉鐮佹槸涓48鍜49椤碉紟鏁呯瓟妗堜负锛48锛49锛
绛旓細绛旓細灏忓崕鎵撳紑鐨勬槸58椤靛拰59椤碉紟鏁呯瓟妗堜负锛58锛59锛
绛旓細灏忓崕鐪嬩竴鏈銆婃暟瀛﹀皬鐏甸氥嬬殑涔︼紝鎵撳紑鍚庯紝鍙戠幇宸﹀彸涓ら〉鐨勫拰鏄117椤碉紝灏忓崕鎵撳紑鐨勬槸锛58銆锛夐〉鍜岋紙59 锛夐〉 鏈涢噰绾筹紝绁濅綘瀛︿範鎰夊揩
绛旓細锛81-1锛壝2 =80梅2 =40锛堥〉锛40+1=41锛堥〉锛夌瓟锛灏忓崕鎵撳紑鐨勬槸绗40椤靛拰绗41椤点
绛旓細121闄や互2=60.5 鎶婁竴涓60.5鐨0.5缁欏彟涓涓60.5 60.5鍔0.5=61 60.5-0.5=60 绛灏忓崕鎵撳紑鐨勯〉鐮佷竴涓槸60涓涓槸61銆傛湜閲囩撼锛屾柊骞村揩涔愶紒
绛旓細璁惧乏杈圭殑椤垫暟鏄痻锛屽彸杈圭殑椤垫暟灏辨槸x+1锛鐢遍x+x+1=185锛屽垯x=92 鎵浠鎵撳紑鐨勬槸92鍜93椤
绛旓細x+(x+1)=185 2x+1=185 2x=184 x=92 x+1=93 灏忓崕鎵撳紑鐨勬槸92銆93涓ら〉
绛旓細185-1=184 184/2=92 灏忓崕鐪鐨勭92銆93椤典功銆備笉鏄宸﹀彸涓よ竟鍚э紝搴旇鏄墠鍚庝袱闈紒锛佸乏闈㈠彧鑳芥槸鍗曟暟锛屽彸闈㈠彧鑳芥槸鍙屾暟鐨勶紝杩欐牱鐨勮瘽锛屽拰涓嶅彲鑳芥槸185鐨勩
绛旓細(185涓1)锛2=92 灏忓崕鎵撳紑鐨勬槸92銆93椤
