11x+150=(3+x)*20
解系数为整数的一元一次方程 56-8X=11+X 3X-2=X+1+6X 7+X=2X+20-14X
x-3(20-x)=3x-7(9-x)
解方程5题3x+7x=9x+84x-3(20-x)=6x-7(11-x)2x+(x-1/3)=1-(x-2/5)3x+2
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1
解方程:1/(x*x+11x-8)+1/(x*x+-8)+1/(x*x-3x-8)=0
4x-3x(20-x)=5x-7x(20-x)
4x-3x(20-x)=5x-7x(20-x)的解法
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
-6x+3=2x+11 x=3/2x+14 3/4x-6=3/2x+3 20-3x=7x+4 5/9x+2=1/3x+4
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
4x-2=3-x -7x+2=2x-4 -x=-0.4x+1 11x+1=5(2x+1) 4x-3(20-x)=3 5(
解方程x(2x-3)+3x+3x(x-2)=5x(x-4)+11