设:2元,5元,10元分别有x张,x张,(50-2x)张.
2*x+5*x+10*(50-2x)=240
x=20
2元,5元,10元分别有20张,20张,10张解方程的过程呢!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!2*x+5*x+10*(50-2x)=2407x+500-20x=240500-13x=24013x=260x=20
某人有240元人民币,面值分别为2元,5元,10元,共50张.其中2元与5元的张数一样多.问2元,5元,10元人民
某人有240元人民币,面值分别为2元,5元,10元,共50张.其中2元与5元的张数一样多.问2元,5元,10元人民
币各有多少张?只能用算式解答!
币各有多少张?只能用算式解答!
数学人气:890 ℃时间:2019-12-20 12:38:42
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