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,去分母得,x+1=(x﹣1)(x+2)﹣1 ,去分母得,x+5=2x﹣5 ,去分母得,(x﹣2)2﹣x+2=x(x+2) ,去分母得,2(x﹣1)=x+3
将方程3x+=去分母后,得15x+5(1-x)=x+2 将方程-=1去分母后,得2(2x-1)-3(x+3)=1 将方程3x-=-去分母后,得12x-2(3x+5)=-(7-x) 将方程+3=2x去分母后,得3x-1+6=2x
3x-x+1=1 3x-x-1=1 3x-x-1=6 3x-x+1=6
3x-2(x-1)=1 3x-2(x-1)=6 3x-2x-2=6 3x+2x-2=6
5x=1-3(x -1) x=1-(3 x -1) 5x=15-3(x -1) 5 x=3-3(x -1)
2x-1=1-(3-x) 2(2x-1)=1-(3-x) 2(2x-1)=8-3-x 2(2x-1)=8-3+x
2y=18-3(y+1) 2y=3-3(y-1) y=3-(y-1) 2y=18-3(y-1)
2y=18-3(y+1) 2y=3-3(y-1) y=3-(y-1) 2y=18-3(y-1)
2-1-x=1 2-1+x=1 2-1+x=2x 2-1-x=2x
2+(x+2)=3(x-1) 2-x+2=3(x-1) 2-(x+2)=3 2-(x+2)=3(x-1)
2y=18-3(y+1) 2y=3-3(y-1) y=3-(y-1) 2y=18-3(y-1)
2x-1+6x=3(3x+1) 2(x-1)+6x=3(3x+1) 2(x-1)+x=3(3x+1) (x-1)+x=3(x+1)(导学号 02052152)