x÷5/12-(x+5/12)=0.
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
x-x/5=2.4 (求未知数x) 12÷5%x=8 4x+x=12.5
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x
解方程x²+x-6分之5x+x²-x-12分之2x-5=x²-6x+8分之7x-10
解分式方程(5-2x)/(x^2-x-12)=5x/(x^2+x-6)+(10-7x)/(x^2-6x+8)得
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8
5x+9x=6x*2+12 x+9-x/3=4
x=x/6+x/12+x/7+5+x/2+4=?
x^3×x^5×x+(x^3)^12+4(x^6)^2=?
1/6x+1/12x+1/7x+5+1/2x+4=x
解方程:x/2+x/6+x/12+x/20+x/30=5