【1-(90-x)×1.6%-60%】x=12.

x[1-(90-x)1.6%-60%]=12 【1-(90-x)×1.6%-60%】x=12. x/45+x/90-x/60=1 解方程 X/60-X/90=1,求X的值? 60(x+1)=90(x-1) 60(x+1)=90(x-1) 60-1/5x+90=x x(x-1)(x+1)=60 50x(x-1)+60x(x-4)=5100 x/x+(1-x)/x-1/x 解方程. 1、x+21%x=36.3 2、x-29%=213 3、60%x+25%x=10.2 4、90%x-18%x=54 X(X-1)=90 X/X+1=60%- - 60%x+90%（300-x)=300*70%和x-2[x-3(x-1）]=8怎么做 *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 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 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x 求解下面的一些方程,好的我加50财富啊(170-x)*1/3-1/4x=102/3x+(135-x)*4/5=983x+2(100-x)=3004x-3(20-x)=6x-7(11-x)23-x/x+19=1/5x+180/90=x-180/60