5X=4X+2 等于几?

x-3分之2-4x+1分之5=1 等于几x等于几 (x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几? 5X=4X+2 等于几? 4-3(2-x)=5x 等于几 4/x+5/x=1,那么x等于几? 2x=4-x,x等于几 0=-5x x等于几 7x=2 x等于几 (7X+6)-3X=4*(2X+5)等于几?怎么求? x-3分之2-4x+1分之5=1 x 等于几 5x=1+2,求X等于几 3-5/2x=0.5x等于几 4x-x等于几 y*y*y*y+2x*x*x*x=4x*x*y 求x等于几,y等于几,写出所有选项! 2分之3x-1等于5分之4x加2-1 x等于几 x+7=?4-x=?x-1=?5-x=?分别等于几? x+5x=6,x等于几 5x-3x=1 求x等于几?