x:(5.4-x)=5:4怎么解?
2个回答
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方法一:
x/(5.4-x)=5/4=1.25
x=1.25*5.4-1.25x
2.25x=1.25*5.4
x=1.25*5.4/2.25=5.4/1.8=3
x=3
方法二:
x/(5.4-x)=5/4
x/(5.4-x+x)=5/(4+5)
x/5.4=5/9
x=5*5.4/9=5*0.6=3
x=3
x/(5.4-x)=5/4=1.25
x=1.25*5.4-1.25x
2.25x=1.25*5.4
x=1.25*5.4/2.25=5.4/1.8=3
x=3
方法二:
x/(5.4-x)=5/4
x/(5.4-x+x)=5/(4+5)
x/5.4=5/9
x=5*5.4/9=5*0.6=3
x=3
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