100x(1+25%)+80(2800-X)乘(1+10%)=3140,x=多少

100x(1+25%)+80(2800-X)乘(1+10%)=3140,x=多少 100xX(1+25%)+80(2800-X)乘(1+10%)=3140,x=多少 100^1/x=25求x, X/100 + X/80 1/2x+1=1/2-1/3x x-2x+3x-4x+...+99x-100x=25解方程 x(x-1)(x-2)...(x-99)(x-100) x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4（x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1 x-(1/7x+1/7x-6)=80/100x这个方程怎么解? x/80 - x/100 = 6 x/9 + 1 = x/6 - 1 100x（X—5）=80x（X—1）解方程 x除55%=100 60%x=30 x+50%x=4.5 （1-25%）x=72 4x+40%x=176 解方程 怎样计算百分数的方程120-25%x=100x+13%x-28%x=3.4(1-40%)x=720x-95%x=155 X+25%X+15%X=420 2X+150=20501.5X-1200=(1+20%)2X-5+X=100 x-2x+3x-4x+5x.+99x-100x=25求解 x-25=80%x,x=? 解方程 90-20%x=80 x-25%x=21 x+60%x=3.2 70%x+46=60 （1-75%）x=36 3x+40%x=23.8 x*x+(x+1)(x+1)=25 1/X(X+1)+1/(X+1)(X+2)+1/(X+2)(X+3).+1/(X+99)(X+100)=