x+3x=14怎么做

x+3x=14怎么做 (3x+2)(X+3)=x+14怎么做 4x-14=(x+2)*(x-3)怎么做 3x=x+100怎么做 x+3x=16怎么做? 240+X=3X怎么做 14+3x=24.5怎么做? 4x+14=28+3x这道题怎么做 X(X-4)=3X+1怎么做 x+2x/3+x-80=720怎么做 3[x-2(x-1)]=9x怎么做 x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做? x*x^3+(-2x^2)^2+14x^6/(-4x^2)怎么做? x*x^3+(-2x^2)^2+14x^6/(-4x^2)怎么做? 3分之x-1=5分之x+2+x 怎么做? 怎么做? 推倒公式:(x+y)(x*x-3x+y*y)=x*x*x+y*y*y怎么做. (x-4)(x-3)-(x-2)(x-3)怎么做 (x-1)(x+2)(x+3)(x+6)怎么做?