(7-X) + (24-X) = 7^2 + 24^2
x+(x+24)+(x+4)/2=7x
X^3-7X^2+18X-24=0
7x-24=x^2+5x
(x×x+3x+2)(x×x+7x+12)-24
解方程(x²+3x+2)(x²-2x-1)(x²-7x+12)+24=0
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
2x=(5x-24)*7/16 2/5x=(x-24)*7/16
2x+3x+4x+5x+x+6x+7x=100
x+(x+24)+(x+24)/2=7x
(x+24)+x+(x/2+12)=7x 怎么解
(1/7x+24)/2=x-1/7x-(1/7x+24) 解方程 (x为未知数)