X等于几 2（2X-3）=1-2X和8-K=2(X+1)值相等快

(x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几? x/（x-3）-2/（x+3）=1【x等于几 x-3分之2-4x+1分之5=1 等于几x等于几 2X×(3X－5）×X等于几 x+1=x+2 x等于几? X-1=2X,问x等于几? int x=2; x*7.2/x+1 等于几 X等于几 2（2X-3）=1-2X和8-K=2(X+1)值相等快 3分之1等于2x-1 x等于几 2x加3x等于30 x等于几 7x=2 x等于几 2x+1x等于几 以知x+x-1次方=3则x平方+x-2次方等于几 (X/X+2)-(X+2/X-2)=8/X*X-4等于几解方程;x除以x+2的和减去x+2除以x-2等于8除以x的平方减4 2X+8Y=17,3X+5Y=7,X和Y,等于几? 当x=2,（x-x²-5）-(2x²+7x-3）等于几 X^2-4X=1,那么x^3-x^-3等于几?正确答案等于322,怎么算 x=2x,求x等于几