SOLUTION: Hi, my son is having problems with his pre algebra homework. His teacher has not issued a math book to assist. his two equations are 8(2x-3)-6x, if x=3 9-2(4x+5) if x = -4 wi

Algebra ->  Expressions -> SOLUTION: Hi, my son is having problems with his pre algebra homework. His teacher has not issued a math book to assist. his two equations are 8(2x-3)-6x, if x=3 9-2(4x+5) if x = -4 wi      Log On


   

Question 156548: Hi, my son is having problems with his pre algebra homework. His teacher has not issued a math book to assist. his two equations are
8(2x-3)-6x, if x=3
9-2(4x+5) if x = -4
will you be able to assist thank you
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
if x=3 then 8%282x-3%29-6x++=++8%282%283%29-3%29-6%283%29+=+8%286-3%29-18=8%283%29-18=24-18=6
if x = -4 then 9-2%284x%2B5%29=9-2%284%28-4%29%2B5%29=9-2%28-16%2B5%29=9-2%28-11%29=9%2B22=31