9.2x-2.5x=13.
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9.2x-2.5x=13.
10%x+x=13.x是多少
(X+X)+(X-X)+(X*X)+(X/X)=100
x+x-2.5+x-4=85
5.4x-x=13.
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?
解下列方程.2.5X-X=22.5 5X+7.3=11.7 30X/44=360 1.9X+0.4X=9.2 58X+62X=960 12X+3.6=8.4
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