若3x+5=9.5,则x=______,4-2x=______.
若3x-2和4-5x互为相反数,则x=______.
关于分式方程的若A/x-5+B/x+2=5x-4/x²-3x-10,则A=______,B=______
若代数式-3x+1与4x-5互为相反数,则x=______.
若2x-3y=5,则6-4x+6y=______.
若x+3y=3x+2y=7,则x=______,y=______.
若x^2+3x-1=0,则x^3+5x^2+5x+18=______
若3x-4y=0,则x/y=______,(x-y)/y=______,(3x+2y)/(2x+3y)=_____.
4x=2x+3,则x=______.
已知3x+1和2x+4互为相反数,则x=______.
已知f(x)=(x-1)(x-2)(x-3)(x-4)(x-5),则f′(1)=______.
若(3x-2y+4)2与|4x-y-3|互为相反数,则x=______,y=______.
已知(x-3)2+|2x-3y+6|=0,则x=______,y=______.