1.25x-2.75=0.125x 0.4x-1.6=x+2

0.125x+2.75=-1.25x 1.25x-2.75=0.125x 0.4x-1.6=x+2 0.125x+2.75=-1.25x x+1=1/2x-1 15X+8=2X-26,5X+8=2X-27,0.3X-1.5=X+0.6 ,0.125X+2.75=-1.25X 0.35X-1.5=-2.15X+3.5,0.125X+2.75=-1.25X ,0.35X-1.5=-2.15X+3.5 一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X 0.125乘X+2.75= -1.25X求X 帮一下了啊,谢了 （X+X)+(X-X)+(X*X)+(X/X)=100 x+1.25x=9 16^X - 12^X -9^X = 0.求X. (98-X)+(100-X)+X=X/0. x-0.25x=0. x+4.5x=0. X-0.25x=0. 4.8x-x=0. X-0.25x=0. 2.2x-x=0. 120X-X=0. x-0.4x=0.