把A.B两根绳子剪去同样长的—段后，剩下的绳子B的长度是A的2倍。两根绳A长3.6米，B长5.2米
\u7ef3\u5b50A\u957f3.6\u7c73\u7ef3\u5b50B\u957f5.2\u7c73\u628a\u4e24\u6839\u7ef3\u5b50\u526a\u53bb\u540c\u6837\u957f\u7684\u4e00\u6bb5\u540e\uff0cB\u5269\u4e0b\u7684\u7ef3\u5b50\u7684\u957f\u5ea6\u662fA\u5269\u4e0b\u76842\u500d\uff0c\u4e24\u6839\u7ef3\u5b50\u5404\u526a\u591a\u5982\u56fe\uff0c
B\u6bd4A\u957f\uff1a5.2-3.6=1.6\uff08\u7c73\uff09
\u526a\u53bb\u540c\u6837\u957f\u7684\u4e00\u6bb5\u540e\uff0cB\u5269\u4e0b\u7684\u662fA\u5269\u4e0b\u76842\u500d\uff0c\u5373B\u5269\u4e0b\u7684\u6bd4A\u5269\u4e0b\u7684\u591a1\u500d\uff0cA\u5269\u4e0b\u7684\u662f1\u500d\uff1b
\u6240\u4ee5A\u5269\u4e0b\u7684\u662f\uff1a5.2-3.6=1.6\uff08\u7c73\uff09
\u526a\u6389\u7684\u662f\uff1a3.6-1.6\uff1d2\uff08\u7c73\uff09
\u6216\uff1a
B\u5269\u4e0b\u7684\u662f\uff1a1.6\u00d72\uff1d3.2\uff08\u7c73\uff09
\u526a\u6389\u7684\u662f\uff1a5.2-3.2=2\uff08\u7c73\uff09
\u89e3\uff1a\u8bbe\u77ed\u7ef3\u5b50\u539f\u6765\u957fX\u7c73\uff0c\u957f\u7ef3\u5b50\u539f\u6765\u957f3X\u7c73\u3002
3X-10=5(X-10)
\u89e3\u5f97X=20
\u52193X=60
\u7b54\uff1a\u539f\u6765\u7684\u77ed\u7ef3\u5b50\u957f20\u7c73\uff0c\u957f\u7ef3\u5b50\u957f60\u7c73\u3002
绛旓細鎶夾.B涓ゆ牴缁冲瓙鍓幓鍚屾牱闀跨殑鈥娈靛悗,鍓╀笅鐨勭怀瀛怋鐨勯暱搴︽槸A鐨2鍊嶃備袱鏍圭怀A闀3.6绫,B闀5.2绫 鎶夾.B涓ゆ牴缁冲瓙鍓幓鍚屾牱闀跨殑鈥旀鍚,鍓╀笅鐨勭怀瀛怋鐨勯暱搴︽槸A鐨2鍊嶃備袱鏍圭怀A闀3.6绫,B闀5.2绫充袱鏍圭怀瀛愬悇鍓幓澶氬皯绫?... 鎶夾.B涓ゆ牴缁冲瓙鍓幓鍚屾牱闀跨殑鈥旀鍚,鍓╀笅鐨勭怀瀛怋鐨勯暱搴︽槸A鐨2鍊嶃備袱鏍圭怀A闀3.6绫,B...
绛旓細濡傛灉涓ゆ牴缁冲瓙閮芥槸1绫抽暱锛岄偅涔堝墿涓嬬殑灏辨槸涓鏍烽暱銆傚鏋滀袱鏍圭怀瀛愪笉鏄1绫抽暱锛屽涔堝墿涓嬬殑灏变笉涓鏍烽暱銆傛墍浠ョ瓟妗堥塁
绛旓細3.6脳2锛5.2锛7.2锛5.2锛2绫筹紝鍚鍓幓浜2绫
绛旓細鍓幓鍚屾牱闀跨殑涓娈靛悗锛孊鍓╀笅鐨勬槸A鍓╀笅鐨2鍊嶏紝鍗矪鍓╀笅鐨勬瘮A鍓╀笅鐨勫1鍊嶏紝A鍓╀笅鐨勬槸1鍊嶏紱鎵浠鍓╀笅鐨勬槸锛5.2-3.6=1.6锛堢背锛夊壀鎺夌殑鏄細3.6-1.6锛2锛堢背锛夋垨锛欱鍓╀笅鐨勬槸锛1.6脳2锛3.2锛堢背锛夊壀鎺夌殑鏄細5.2-3.2=2锛堢背锛...
绛旓細涓ゆ牴缁冲瓙锛屾妸瀹冧滑鍑忓幓鐩稿悓闀跨殑涓娈碉紝涓ゆ牴缁冲瓙涔嬪樊涓嶅彉锛屾墍浠ヤ笉绠″噺鍘荤浉鍚岀殑闀垮害鏄灏戯紝涓ゆ牴缁冲瓙鐩稿樊鐨勯暱搴︿粛鐒舵槸鍘熸潵闀垮害鐨勫樊5.8-3.3=2.5绫
绛旓細鎶婁粬浠鍓幓鍚屾牱闀跨殑涓娈靛悗锛涓ゆ牴缁冲瓙鐩稿樊涓2.5绫炽傞亣鍒拌繖绉嶉棶棰樺彲浠ラ噰鐢ㄤ唬鍏ユ硶鍜岃鏈煡鏁版硶銆傞鍏堥噰鐢ㄤ唬鍏ユ硶锛岃涓哄壀鍘荤殑闀垮害涓0.5绫筹紝5.8鍑忓幓0.5涓5.3绫筹紝3.3鍑忓幓0.5涓2.8绫筹紝5.3鍑忓幓2.8绛変簬2.5绫炽傚噺鍘荤殑闀垮害涔熷彲浠ヤ负1绫筹紝2绫筹紝缁撴灉閮芥槸2.5绫炽備篃鍙互璁惧噺鍘荤殑闀垮害涓篈锛岋紙5.8锛...
绛旓細璁缁闀垮垎鍒负a ,b 鍓帀 x (a-x):(b-x)=2:1 (a-2x):(b-2x)=3:1
绛旓細3.6*2-5.2=2
绛旓細鈥鍓幓鍚屾牱闀跨殑涓娈靛悗,閾佷笣a姣旈搧涓漛鐭1.6绫斥,鍘熸潵涔熺煭1.6绫.鍥犱负浠栦滑鐨勯暱搴︽瘮鏄3:5,a涓3浠,b涓5浠,鎵浠姣攂灏2浠,姣忎唤鍗充负锛1.6/锛5-3锛夛紳0.8锛堢背锛a闀锛0.8脳3锛2.4锛堢背锛b闀锛0.8脳5锛4锛堢背锛夊鏋滅敤鏂圭▼ 璁綼闀縳绫,鍒檅闀5/3 x 鍒楁柟绋 x锛5/3 x锛1.6 瑙ｅ緱 ...
绛旓細褰撴槸3锛1鏃涓ゆ潯缁冲瓙鍒嗗埆鏄3a鍜1a,褰撴槸2:1鏃剁怀瀛愬垎鍒槸2b鍜1b锛鍓帀鐨勯暱搴鐩哥瓑锛屽垯3a-2b=a-b,鎵浠2a=b,鎵浠ュ綋鏄2:1鏃剁怀瀛愬垎鍒槸4a鍜2a锛4a-3a=2a-a=a锛屾墍浠ョ涓娆″悇鍑忓幓浜哸锛屽湪4a鍜2a鐨勫熀纭涓婂悇鍔燼灏辨槸鍘熼暱搴︼紝鍗充负5a鍜3a锛屾墍浠ュ師鏉ユ瘮涓5:3 ...
