23:x=12:14
23:X=12:14 X=?34:X=54:2 X=?
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
解方程:81x-341=76(x-2),14x-12=7x+23,9(x-4)=45+6x,2(x-2)+3(4x-2)
方程:12x+36-6x=102 2x-48-x=54 2x-1+x=14
15x=23x-24 12+5x=3x-8 3(x-3)=9-(x+6)解 4+x=4x-17解
x-1=3x+3 x-3=12-4x 6x-14=5x-10 x+1=2-4x
已知x-4/x=6,求代数式2x²-20x/x²-14x+4除(1-x-12/2-x)的值
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
(23x+30)=(17x+30)=(14x+30)=(13x+30)=(10x+30)=(8x+30)=(7x+30)
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
3X+5X=48 14X-8X=12 6*5+2X=44
x^2-3x+2分之x^2+x-6 + 2x^2-14x+12分之x^2-36 = 3x^2-3分之x^2+10x+9