1.(x/2+20)/(x/3)=(x/2-20)/(x/4)
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1.(x/2+20)/(x/3)=(x/2-20)/(x/4)
![1.(x/2+20)/(x/3)=(x/2-20)/(x/4)](/uploads/image/z/15082444-28-4.jpg?t=1.%28x%2F2%2B20%29%2F%28x%2F3%29%3D%28x%2F2-20%29%2F%28x%2F4%29)
(x/2+20)/(x/3)=(x/2-20)/(x/4)
方程两边同时乘以12x得
4(x/2+20)=3(x/2-20)
4(x+40)=3(x-40)
4x+160=3x-120
x=-280
方程两边同时乘以12x得
4(x/2+20)=3(x/2-20)
4(x+40)=3(x-40)
4x+160=3x-120
x=-280
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
1.(x/2+20)/(x/3)=(x/2-20)/(x/4)
2x+3x+4x+5x+x+6x+7x=100
2x-7/4x=13 3x+1/3x=20/21 x-0.28x=12.
C语言求解方程x+x^2+x^3+x^4+...+x^19+x^20=41.6
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002
x-10=4(x-28) 3(x-28)=x+56+28 2(1.5x-30-20)=x 2(2x-20-45)=x-1
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2
x+3/20x=46 ,x-1/5x=40 ,x-1/2x=3/4 ,x-0.2x=18解方程
x-(1/5+1/5)x-39=39 x-1/4x-2/5x=112 x-1/6x-1/3x-12=20