1.5(x-6)+18=3x
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
3X-18=13.2 1.5X-X=6 4X+1.2X=26
6X=3(18+x)求X
(1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1)
解方程①(x+3/x-1)²-5(x+3/x-1)+6=0 ②x²-2/x+3-6x+18/x
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
计算1/[x(x+3)]+1/[(x+3)(x+6)]+.+1/[(x+15)(x+18)]=?
3/x-1=4/x 6/x+1=x+5/x(x+1)
6x-3x=18 1.5x+18=3x
6x-2(340-3x)=220 18+0.4x=22.2-x
1/ X(x+3)+1/(x+3)(x+6)+1/(x+6)(x+9)=3/2x+18请问这个方程式怎么