甲数的六分之五等于乙数的三分之二甲乙两个数的和是九十求甲乙两数各是多少?
\u7532\u6570\u7684\u516d\u5206\u4e4b\u4e94\u7b49\u4e8e\u4e59\u6570\u7684\u4e09\u5206\u4e4b\u4e8c\uff0c\u7532\u4e59\u4e24\u6570\u7684\u548c\u662f90,\u6c42\u7532\u4e59\u4e24\u6570\u5404\u662f\u591a\u5c11\uff1f\u4e59\u7b49\u4e8e\u7532\u76845/6\u00f72/3=5/4
\u7532:90\u00f7(1+5/4)=40
\u4e59:90-40=50
\u7532X5/6=\u4e59X2/3\uff0c\u7532/\u4e59=4/5\uff0c\u7532=4X90/\uff084+5\uff09=40\uff0c\u4e59=50
设甲为X,乙为Y 则六分之五X=三分之二Y X+y=90 (两个用大括号连起来) 解得x=40,Y=50解:设甲为X,乙为Y. 1式 : 5/6X=2/3Y,2式:X+Y=90 由2式X=90-Y代入1式,解得Y=50,再把Y=50代入2式,解得X=40. 甲数是40,乙数是50。
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