2400/1.5x+2400/x=40

（X+X)+(X-X)+(X*X)+(X/X)=100 56-x =x- (40-x) X/(x-30)=(x+40)/X解方程, (X+X*20%)-[(1200-X)-(1200-X)*20%]=40% X+X*20%-(1200-X)-(1200-X)*20%=40% 30X-2X=84 5.8X-X=60 6.6X-5X=8 4X-X=24 1.5X-X=1 2400 x-1200 x的平方+10000=多少? 2400*40%*x+3750=(2400+300)*(40%+10%)*(x-3)怎么解 x+x=x+15 (1.5X-20)-(X+20+25)=40怎么解? 3X-18=13.2 1.5X-X=6 4X+1.2X=26 36-(3x-10)=x-2x 3.2x=14.2-1.5x