甲数的5分之3等于乙数,甲、乙两数的最简整数比是( ),如果甲数是30,则乙数是( )。
\u7532\u6570\u7684\u516d\u5206\u4e4b\u4e94\u7b49\u4e8e\u4e59\u6570\u7684\u4e09\u5206\u4e4b\u4e94\uff0c\u7532\u4e59\u4e24\u6570\u7684\u6700\u7b80\u6574\u6570\u6bd4\u662f\uff08 \uff09\u5982\u679c\u7532\u662f30\uff0c\u4e59\u662f\uff08 \uff095/3\uff1a5/6=6\uff1a3=2\uff1a1
\u4e59\u662f30\u00f72\u00d71=15
\u7532\u6570\u7684\u516d\u5206\u4e4b\u4e94\u7b49\u4e8e\u4e59\u6570\u7684\u4e09\u5206\u4e4b\u4e94\uff0c\u7532\u4e59\u4e24\u6570\u7684\u6700\u7b80\u6574\u6570\u6bd4\u662f\uff082\uff1a1 \uff09\u5982\u679c\u7532\u662f30\uff0c\u4e59\u662f\uff08 15\uff09
\u795d\u4f60\u5f00\u5fc3
\uff082/3\uff09x=(4/5)y
x:y=(4/5)\u00f7\uff08(2/3)
=6:5
\u7532\u662f30 \u4e59\u5c31\u662f25
5:3 18
5/3 18
绛旓細锛5锛3锛夛紝锛18锛
绛旓細鐢叉暟涓簒,涔欎负3x/5 x:3x/5=5:3 鐢叉暟鍜屼箼鏁鐨勬瘮鏄5:3 鐢叉暟鐨勪簲鍒嗕箣涓夌瓑浜庝箼鏁璇存槑鐢叉瘮杈冨ぇ
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绛旓細11銆鐢叉暟鐨5鍒嗕箣3绛変簬涔欐暟锛鐢蹭箼涓ゆ暟鐨勬瘮鏄紙 5:3 锛夋瘮鍊兼槸锛 3鍒嗕箣5 锛夈12銆佸皬鏄庡仛浣滀笟锛屽凡缁忓畬鎴8鍒嗕箣3锛屽畬鎴愮殑鍜屾病瀹屾垚鐨勬瘮鏄紙 3锛5 锛夈13銆亁闄や互y鐨勫晢鏄7鍒嗕箣3锛寈鍜寉鐨勬瘮鏄紙 3锛7 锛夈14銆佷簲瑙掍汉姘戝竵涓庝竴鍏冧汉姘戝竵鐨勫紶鏁版瘮鏄6锛8锛屽垯浜旇涓庝竴鍏冪殑鎬婚挶...
绛旓細涓嶅,鐢蹭箼鎴愭姣
绛旓細鐢3/5=涔3/4 鐢/5=涔/4 鐢/涔=5/4 鐢诧細涔=5锛4=1.25 鐢插拰涔欑殑姣旀槸5锛4锛屾瘮鍊兼槸1.25
绛旓細鐢茬殑浜斿垎涔嬩笁绛変簬涔欐暟锛鐢蹭箼涓鏁扮殑鍜屾槸16锛屾眰鐢叉暟銆傛柟绋嬭В 璁剧敳鏁颁负X X+3X/5=16 1.6X=16 X=10 绛旓細鐢叉暟鏄10.绁濅綘寮蹇
绛旓細鐢叉暟5鍒嗕箣3鍜屼箼鏁扮浉绛锛岀敳鏁鏄涔欐暟鐨锛3鍒嗕箣5
绛旓細鐢诧細涔=5锛3 涔欙細涓=3锛2 鎵浠ワ細涓欐暟鏄鐢叉暟鐨 =2梅5 =5鍒嗕箣2 甯屾湜瀵逛綘鏈夊府鍔╋紝婊℃剰璇峰強鏃堕噰绾筹紝浣犵殑閲囩撼鏄垜鍥炵瓟鐨勫姩鍔涳紒
绛旓細鐢瞲3/5=涔x1/6.涓よ竟鍚屾椂闄や互涔檟3/5寰 鐢/涔=(1/6)/(3/5),鈭寸敳/涔=5/18銆