Math problem ill fail math if i dont get this extra credit!! help!!

Math problem ill fail math if i dont get this extra credit!! help!!
a. Solve the equation l5x+3l= 2x-8 by any method.
b. Generalize part a by solving the equation lmx+nl=2x-8 for x.
c. Find values of m and n for which the equation of part b had infinatly many solutions. Describe these solutions.
d. Find values of m and n for which the equation of part b has no solution.
The "l"s are absolute values.
Show work plz
Please help! I'll do the other one. I need straight A's in Algebra or my parents will kill me. Thanks!,

a)I5x+3I=2x-8, 5x+3=2x-8, 3x=-11, x= -11/3
b)Imx+nI= 2x-8, mx+n= 2x-8, 2x-mx= n+8, x(2-m)=n+8, x=(n+8)/(2-m)
c) part b does have infinite solutions, n can be any number, m can be any number except 2
d)no solution at m=2 because the denominator would then be 0, and a 0 in the denominator means no solution, n can be any number