X－0.48X=7.28

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X－0.48X=7.28
X－0.48X=7.28

X－0.48X=7.28
X-0.48x=7.28
解；(1-0.48)x=7.28
0.52x=7.28
x=7.28/0.52
x=14
检验；将x=14代入得
14-0.48x14=7.28
7.28=7.28
故正确

X－0.48X=7.28
0.52x＝7.28
x＝7.28÷0.52
x＝14

X－0.48X=7.28 x-0.48x=7.28 x-0.48x=7.28 x-0.48x=7.28列方程! x-0.48x=7.28方程（X+X)+(X-X)+(X*X)+(X/X)=100 x-0.48x=4.68 x-0.52x=0.48 X-0.48X=0.78 X-0.48X=0. x-0.48x=20.8 x-0.48x=7.2 x*x*x*x*x=80000? X×X－3X＋1=0求分式X×X÷〈X×X×X×X+3X×X+1〉 x+2/x+3－x+1/x+2=x+8/x+9－x+7/x+8 x*x*x=504 x*x*x=504 （x+x）+(x-x)+(x/x)=11.2 f(x)=x,x