爸爸给小林买了一个足球和一个篮球共花了135元足球的单价是篮球的4/5每个篮球 王老师买5个足球和3个篮球共花了244元，买4个足球和6个篮...
\u5b66\u6821\u4e704\u4e2a\u8db3\u7403\u548c5\u4e2a\u7bee\u7403\u5171\u82b1570\u5143\uff0c\u5982\u679c\u4e704\u4e2a\u8db3\u7403\u548c3\u4e2a\u7bee\u7403\u5171\u82b1370\u5143\uff0c\u6bcf\u4e2a\u7bee\u7403\u591a\u5c11\u5143\uff1f\u8bbe\u8db3\u7403\u6bcf\u4e2ax\u5143\uff0c\u7bee\u7403\u6bcf\u4e2ay\u5143
\u7531\u9898\u610f\u53ef\u5f97\uff1a4x+5y=570\uff08\u4e00\u5f0f\uff09
4x+3y=370\uff08\u4e8c\u5f0f\uff09
\u4e00\u5f0f-\u4e8c\u5f0f=4x+5y-4x-3y=570-370
\u5f972y=200
\u89e3\u5f97y=100
\u7b54\uff1a\u6bcf\u4e2a\u7bee\u7403100\u5143\u3002
\u628a\u7b2c\u4e00\u6b21\u8d2d\u4e70\u6269\u59272\u500d\u51cf\u53bb\u7b2c\u4e8c\u6b21\u8d2d\u4e70\u3002\u5f97\uff0c\u30145\u00d72\u4e2a\u8db3\u7403+3\u00d72\u597d\u7bee\u7403\u5171\u82b1244\u00d72\u5143\u3015-\u30144\u4e2a\u8db3\u7403+6\u4e2a\u7bee\u7403\u5171\u82b1278\u5143\u3015\u3002\u6240\u4ee5\uff0c6\u4e2a\u8db3\u7403\u7684\u94b1=210\u5143\u30021\u4e2a\u8db3\u740335\u5143\u3002\u628a\u8db3\u7403\u5355\u4ef7\u4ee3\u5165\u7b2c\u4e00\u6b21\u8d2d\u4e70\uff0c\u5f9735\u00d75+3\u4e2a\u7bee\u7403=244\uff0c3\u4e2a\u7bee\u7403=69\uff0c1\u4e2a\u7bee\u740323\u5143\u3002
设篮球单价x ，则足球价格3/5xx+3/5x=280
x=175
3/5x=105
绛旓細璁绡悆鍗曚环x 锛屽垯瓒崇悆浠锋牸3/5x x+3/5x=280 x=175 3/5x=105
绛旓細濡傛灉鍒楁柟绋嬶紝閭ｄ箞锛岄鍏堣瀹氫竴涓湭鐭ユ暟涓篨锛岄偅涔堝挶浠繖閲屽氨璁惧畾绡悆鐨勯挶鏁颁负X锛岄偅涔瓒崇悆鐨勯挶鏁颁负1.5X銆傞偅涔堝氨鏈夛細1.5X-X=60 0.5X=60銆傛墍浠ワ紝X=120锛1.5X=180銆傛墍浠ワ紝鏈鍚庣粨鏋滀负锛岀鐞120鍏冿紝瓒崇悆180鍏冦
绛旓細璁绡悆浠锋牸涓簒,閭ｄ箞瓒崇悆鐨勪环鏍兼槸(6/5)x锛寈+(6/5)x=330,姹傚緱绡悆浠锋牸鏄150鍏冿紝瓒崇悆浠锋牸鏄180鍏冦
绛旓細鍥犱负灏忔槑鐨鐖哥埜涔颁簡涓涓冻鐞绀肩墿缁欏皬鏄
绛旓細480-280=200 7-2=5锛瓒崇悆锛200/5=40锛堣冻鐞冧环鏍硷級锛280-2*40锛/4=50锛绡悆浠锋牸锛
绛旓細Dad bought me a football yesterday.Dad bought a football for me yesterday.
绛旓細My father bought me a football yesterday
绛旓細鐜颁环锛濆師浠访楁姌鎵 锛160脳90锛 锛144锛堝厓锛16脳锛1-90%锛夌畻鐨勬槸灏戣姳浜嗗灏戦挶
绛旓細涔﹀寘鐪熷疄鍞环 40*85%=34鍏 瓒崇悆鐪熷疄鍞环 80-34=46鍏 瓒崇悆鍘熶环 46*(5/4)=57.5鍏 瀛╁瓙锛岀畻涓媺锛屽姵椹鹃噰绾充负鏈浣崇瓟妗堟妸锛屼粖澶╁府鍔╀簡鍑犱釜瀛╁瓙锛屾渶鍚庨兘娌″弽搴旓紝鎬庝箞璇翠篃鏄姳璐逛簡鏃堕棿鐨勫晩
绛旓細Yesterday my dad bought me a football
