甲和乙拿出同样的钱买面包甲比乙多拿4个面包回来后甲给乙3元求每个面包多少钱 甲和乙拿出同样的钱买面包甲比乙多拿5个面包回来后甲给乙3元求...
\u7532\u4e59\u4e24\u5305\u7cd6\u7684\u8d28\u91cf\u6bd4\u662f4:1\uff0c\u4ece\u7532\u5305\u53d6\u51fa130\u514b\u653e\u5165\u4e59\u5305\u540e\uff0c\u4e24\u5305\u7cd6\u7684\u8d28\u91cf\u6bd4\u662f7:5\uff0c\u539f\u6765\u7532\u5305\u6709\u591a\u5c11\uff1f\u8bbe\u7532\u662f4x\uff0c\u4e59\u662fx\uff084x-130\uff09\uff1a\uff08x+130\uff09=7:57x+910=20x-65020x-7x=910+65013x=1560x=120\u5343\u514b\u53e6\u4e00\u4e2a\u662f4x=480\u5343\u514b\u3002
\u7532\u7ed9\u4e593\u5143 \u5b9e\u9645\u7532\u6bd4\u4e59\u591a\u82b16\u5143 \u90a3\u4e48\u6bcf\u4e2a\u9762\u53051.2\u5143 \u5217\u5f0f \uff083+3\uff09/5=1.2\uff08\u5143\uff09
如果甲乙要平分面包的话1.5元一个 否则无解
甲比乙多拿了4个，甲给乙两个，他们就一样多了，两个值3元，一个1.5
两元一个，买两个赠一个！也有五毛的鸡蛋糕！
绛旓細绛旓細姣忎釜闈㈠寘鏄0.75鍏冦
绛旓細1.5鍏冧竴涓 鍚﹀垯鏃犺В 鐢叉瘮涔澶氭嬁浜4涓紝鐢茬粰涔欎袱涓紝浠栦滑灏变竴鏍峰浜嗭紝涓や釜鍊3鍏冿紝涓涓1.5
绛旓細鐢叉瘮涓欏5+2锛7涓 锛7+5锛壝3锛4涓 姣忎釜 5.6梅4锛1.4鍏 涓欏緱 锛7-4锛墄1.4=4.2鍏 涔寰 5.6-4.2锛1.4鍏
绛旓細骞冲潎姣忎汉鑳藉鍚冿紙5+2+2锛壝3=3锛堜釜锛夛紝姣忎釜闈㈠寘锛5.6梅锛5+2-3锛=1.4锛堝厓锛夛紝鐢蹭粯缁欎箼锛1.4脳锛3-2锛=1.4锛堝厓锛夛紝鐢蹭粯缁欎笝锛5.6-1.4=4.2锛堝厓锛夛紱鏁呯瓟妗堜负锛1.4锛4.2锛
绛旓細鐢叉瘮涓欏鍚:5+2=7涓 鐢蹭箼涓鍏辨瘮涓欏鍚:7+2=9涓 骞冲潎姣忎汉鑳藉鍚9梅3=3涓 鐢叉瘮骞冲潎鏁板鍚:7-3=4涓 姣忎釜闈㈠寘:5.6梅4=1.4鍏 涔欐瘮骞冲潎鏁板皯鍚:3-2=1涓 鐢蹭粯缁欎箼:1.4鍏 鐢蹭粯缁欎笝:5.6-1.4=4.2鍏
绛旓細2/(10/2)=0.4鍏
绛旓細鐢插悆7涓紝涔鍚2涓紝涓欏悆0涓紝鐢插鍚冧簡涔欎竴涓紝澶氬悆浜嗕笝3涓竴鍏卞鍚4涓嬁鍑4涓闈㈠寘閽銆5.6/4=1.4銆備笝1.4*3=4銆備箼1.4*1=1.4銆傛柟绋嬫棤闄愯В銆
绛旓細鐢叉瘮涓欏鍚:5+2=7涓敳涔欎竴鍏辨瘮涓欏鍚:7+2=9涓钩鍧囨瘡浜鸿兘澶氬悆9梅3=3涓敳姣斿钩鍧囨暟澶氬悆:7-3=4涓瘡涓闈㈠寘:5.6梅4=1.4鍏涔欐瘮骞冲潎鏁板皯鍚:3-2=1涓敳浠樼粰涔:1.4鍏冪敳浠樼粰涓:5.6-1.4=4.2鍏 鍚屽浣犲ソ锛屽鏋滈棶棰樺凡瑙ｅ喅锛岃寰楀彸涓婅閲囩撼鍝~~鎮ㄧ殑閲囩撼鏄鎴戠殑鑲畾~璋㈣阿鍝 ...
绛旓細4.4X=8800锛岃В寰梄=2000鍏/鍚
绛旓細1鍗冨厠鑻规灉3.5鍏冦傝В锛氫护鐢蹭箼涓や汉鑺鍚屾牱鐨n鍏閽变拱鐨勮嫻鏋滈兘涓簃鍗冨厠銆備笖璁1鍗冨厠鑻规灉x鍏冦傞偅涔鐢叉瘮涔澶氳3鍗冨厠鑻规灉鍚庯紝鐢茬殑鑻规灉鎬婚噺涓(m+3)鍗冨厠锛屼箼鐨勮嫻鏋滄婚噺涓(m-3)鍗冨厠銆傝岀敳鏈缁堜粯鐨勯挶涓(n+10.5)鍏冿紝涔欐渶缁堜粯鐨勯挶涓(n-10.5)鍏冦傚垯鐢遍鎰忓彲鍒楁柟绋嬩负锛(n+10.5)-(n-10.5)=((m...
