x/48-x/60=2

x+(x+1)+(x+2)=48 x/48-x/60=2 x/48-x/60=2 (x-1)(x-2)(x-3)(x-4)=48 X+X-6+X-4+X/2=60 x*x-(x-2)*(x-5)=60 (4/x-5)+(x-3)/(12-x)=(x-45)/(x^2-17x+60) f(x)=x^2+x (x 2[x-(48-x)]=2(48-x)-[x-(48-x)]解这个方程 x^2=x x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, f(x)=根号(8x-x^2)-根号(14x-x^2-48)的最大值? 2x=(60-x)+x+2(60-x) x等于多少? x/x平方-x+2=2x/x+1 f(x)=x|x|+2x (x (X+1)X(X+2)X(X+3)=504 60+2x=185 7x+22=43 16+8x=40 4x-54=14 0.5x-1.2×5=3.8 （x+3）÷2=10.5 6x+4×6=72 5x-16.5×3=25 x+4.8x=29 12.5x-0.9x=52.2 6x+9x-12x=2.37 8x-6=70 12x+48=132 4x+8x=14.4 5.8x-1.6x=12.6 3x+2x×12=42 6（2x-6）=12.6....