4x+2m=3x+1
x=1-2m
3x+2m=6x+1
3x=2m-1
x=(2m-1)/3
方程4x+2m=3x+1和方程3x+2m=6X+1的解相同
1-2m=(2m-1)/3
3-6m=2m-1
8m=4
m=1/2
(m+2)^2001*(2m-7/5)^2002
=(1/2+2)^2001*(2*1/2-7/5)^2002
=(3/2)^2001*(-2/5)^2002
=(3/2)^2001*(-2/5)^2001*(-2/5)
=［3/2*(-2/5)］^2001*(-2/5)
=(-3/5)^2001*(-2/5)
=(3/5)^2001*2/5
=3/5*2/5*(3/5)^2000
=6/25*(3/5)^2000