4/5x-x=120

X-X/12-X/7-X/8-X/4-X/20-X/5-30-120-300=50解方程 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100 (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x 计算x-2/5x+120=3/4x x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=? 提取公因式:已知x*x-5x+1=0 求x*x*x-4x*x-4x-1 x-x/4-120=x/2 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? x+2/3x=60 x-3/5x=120 4x+18x=1x+2/3x=60 x-3/5x=120 4x+18x=132! x+3分之2 x=60 x-5分之3x=120 4x+18x=132x+3分之2 x=60 x-5分之3x=120 4x+18x=132 (X+5)((120/x)-4)=120 x^-6x+5=x+4 5*4x+x*x=80 y=|-x.x+4x+5| x+2/3x=60 x-2/5x=120 4x+18x=132