甲乙两根同样长的绳子如果从甲绳上剪去15米从乙绳上剪去10米后乙绳是甲绳的2倍甲乙两绳原来各是多少 有甲乙两根绳，甲绳长度是乙绳长度的两倍，如果从两根绳上各剪去...
\u7532\u5df1\u4e24\u6839\u7ef3\u5b50\u957f\u5ea6\u76f8\u7b49,\u5982\u679c\u4ece\u7532\u7ef3\u4e0a\u526a\u53bb15\u7c73,\u4ece\u4e59\u7ef3\u4e0a\u526a\u517110\u7c73\u540e,\u4e59\u7ef3\u662f\u7532\u7ef3\u76842\u500d.\u7532.\u4e59\u4e24\u7ef3\u539f\u6765\u6709\u591a\u957f?(15-10)\u00f7\uff082-1\uff09=5\u7c73
15+5=20\u7c73
\u8bbe\uff1a\u4e59\u7ef3\u957f\u4e3a X \u7c73\uff0c\u5219\u7532\u7ef3\u957f\u662f 2X \u7c73\uff0c\u5373
2X - 12 \uff1d \uff08X - 12\uff09*\uff083\uff081/2\uff09\uff09
\u89e3\uff1a2X - 12 \uff1d\uff08X - 12 \uff09*3.5
2X - 12 \uff1d3.5X - 12*3.5
3.5X - 2X \uff1d 12*3.5 - 12
1.5X \uff1d 30
X \uff1d 20
\u4e59\u7ef3\u957f\u662f 20 \u7c73\uff0c\u7532\u7ef3\u957f\u662f20*2\uff1d40 \u7c73\u3002
设甲X 乙Y
由题意得 X=Y ①
2(X-15)=Y-10 ②
两式联立求解
得X=Y=20
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绛旓細鐢35梅锛1-9/10脳5/8锛=35梅锛1-9/16锛=35梅7/16 =80绫 涔80脳5/8=50绫
绛旓細濡傛灉涓ゆ牴缁冲瓙鐨勫師闀挎槸澶т簬1绫筹紝鍋囪鏄2绫筹紝鐢插壀鍘诲畠鐨 1 2 锛屽垯鍓╀笅鐨勭怀瀛愶紝鏄2绫-2绫趁 1 2 =1绫筹紱涔欏壀鍘 1 2 绫筹紝鍒欏墿涓嬬殑缁冲瓙锛2绫- 1 2 绫= 3 2 绫筹紝鎵浠ュ墿涓鐨勭怀瀛愮敳姣斾箼鐭紱濡傛灉涓ゆ牴缁冲瓙鐨勫師闀挎槸灏忎簬1绫筹紝鍋囪鏄 1 ...
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绛旓細鐢茬怀鎴彇5鍒嗕箣1鍚庢瘮渚嬫槸3:2鎵浠ユ湭鎴椂锛屾瘮渚嬫槸3锛氾紙2梅4/5锛=6:5鎵浠ョ敳闀22X5/11=10M涔欓暱22X6/11=12M
绛旓細瑙:璁惧噺鍘讳簡x绫 鏍规嵁棰樹腑鏉′欢锛屽彲寰楁柟绋 63-x=3(29-x)锛63-x=3脳29-3x锛2x=24锛屽緱:x=12 鍑忓幓浜12绫
绛旓細涔欑怀瀛愮敤鍘诲洓鍒嗕箣涓锛7/8X1/4=7/32(绫筹級鐢茬怀瀛鐢ㄥ幓鍥涘垎涔嬩竴绫,1/4=8/32锛堢背锛夌敳鏍圭怀瀛愮敤鍘荤殑閮ㄥ垎闀夸簺.
