x/198.6/10*(198.6-87.4)=x-8500

x/198.6/10*(198.6-87.4)=x-8500 198.6*10X-（198.6+87.4）*X=8500 198.6x+87.4x+8500=198.6*10x的值为(要有过程). x*198.6-8500=x/10*(198.6+87.4)的值为多少 198.6*10x=(198.6+87.4)x+8500 谁会解这个方程 试求：x-x^10-x^21+x^32+x^43-x^54+x^65+x^76-x^87-x^98被x-1除所得的余式 x-x*9/10 X+(x+2)=(x+4)+87, (x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2 (x-1)/(x+3x+2)+6/(2+x-x)-(10-x)/(4-x) 因式分解(x+1)(x+2)-x-10(x²-x)²-18(x²-x)+72 (x^2-x)^2-18(x^2-x)+72(x+1)(x+2)-x-10 解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 (x+7/x+6) +(x+9/x+8)=9x=(x+10/x+9) +(x+6/x+5) X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4) 化简|x-5|+|x+10|-|x-15|, |x+5|+|x-7|+|x+10|化简 (X-2)(X+3)+3x+10