X:10/7=0.4x+12怎么解
(54+X)/(12+X)=7X怎么解
(x+12)*(x+12)=x*x+360怎么解
(x+24)+x+(x/2+12)=7x 怎么解
12X+10(X-3)+8[105-(X+X-3)]=1086 怎么解
10*[2-x]-9*[2-x]-8*[2-x]-7*[2-x]=56怎么解
根号下(5x^2+10x+1)+x^2+2x=7怎么解
60-x=x-12怎么解?
15(x-0.4)=12(x+0.25),这道题怎么解?
x:七分之十=0.4x+12怎么解?
18*(x-0.4)=12*(x+0.25) 怎么解方程
X-0.2:X-1.52-0.4= 9:7怎么解 ,
7x-3x+0.04=0.4怎么解方程