X-12=(X/2+12)/2+3
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X-12=(X/2+12)/2+3
![X-12=(X/2+12)/2+3](/uploads/image/z/17008084-28-4.jpg?t=X-12%3D%28X%2F2%2B12%29%2F2%2B3)
X-12=(X/2+12)/2+3
2X-24=X/2+12+6
2X-X/2=18+24
3X/2=42
X=42*2/3
X=28
2X-24=X/2+12+6
2X-X/2=18+24
3X/2=42
X=42*2/3
X=28
解方程:2x(x-1)-x(3x+2)=-x(x+2)-12
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
若x=π/3,|x+1|+|x+3|+...+|x+13|-|x+2|-|x+4|-...-|x+12|
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
x-o.8x=6 12x-8x=4.8 3x-8=16 7.5x-2x x-0.7x=3.6 求答案
5x+9x=6x*2+12 x+9-x/3=4
x^3×x^5×x+(x^3)^12+4(x^6)^2=?
2x(x-3)-(x-3)(x+6)=x²+12
x/2+x/8+x/12+x/20=1
解方程{3X+X+2X=12}
(5X-15)-(2X+3)=X+12
解方程{3X×X×2X=12}