2.5x-2.17=21.9-5.8X 方程解

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2.5x-2.17=21.9-5.8X方程解2.5x-2.17=21.9-5.8X方程解2.5x-2.17=21.9-5.8X方程解2.5x-2.17=21.9-5.8X2.5x+5.8x=21.9+

2.5x-2.17=21.9-5.8X 方程解
2.5x-2.17=21.9-5.8X 方程解

2.5x-2.17=21.9-5.8X 方程解
2.5x-2.17=21.9-5.8X
2.5x+5.8x=21.9+2.17
8.3x=24.07
x=24.07÷8.3
x=2.9

x+17=3(x+13),2x-11.2=0.6x,2.5x-2.17=21.9-5.8x,8（x-1.5）=x+0.6,2（0.5-x）+6=3x-2.53,用方程解解方程 2.5x-2.17=21.9-5.8x 2.5x-2.17=21.9-5.8X 方程解（X+X)+(X-X)+(X*X)+(X/X)=100 x+x-2.5+x-4=85 x+ 5.8x=12 2*x*x+2.5x=13 x=? X乘X减2.5X=6,　　求X! ２.5x-x=15 x =2.5(x-180) x*x*x*x*x=80000? 3道简单的分式方程,1.3/(1-x^) = 2/(1+2x+x) - 5/1-2x+x^2.5x/(x^+x-6) + (2x-5)/(x^-x-12) = (7x-10)/(x^-6x+8)3.(x+1)/(x+2) + (x+6)/(x+7) = (x+2)/(x+3) + (x+5)/(x+6) z=0.015x*x+y*x*0.05+(1-x-y)*2.5*(x+y) x>0.35.xy>0.70x+y x*x*x=504 x*x*x=504 （x+x）+(x-x)+(x/x)=11.2 f(x)=x,x x+x=x+15 X(X-1)=X