X+X×X=56 (X+2)-(X×X+7)=-45 X+a=105 X=?a=?
3x(7-2x)+5x(2x-1)=4x(x-3)+56
2X-56=16
3x(7-2x)+5x(2x-1)=4x(x-3)+56 求X的值
(x-2)/(x+2)-16/(x^2-4)=(x+2)/(x-2)
x-2/x+2-16/x^2-4=x+2/x-2用换元法解
x-o.8x=6 12x-8x=4.8 3x-8=16 7.5x-2x x-0.7x=3.6 求答案
(x-2)/(x+2)=(x+2)/(x-2)+16/(x平方-4)
解分式方程:x-2/x+2=x+2/x-2+16/x平方-4
解分式方程:x-1/x+2=x+2/x-1+16/x平方-4
x+3x+2*8=56 x=?
(56-2X)/(36-2X)=X