Question

4 (3x + 5y + 2z) + 3(x-z)

Tom: 12x + 20y +8z
Jess: 5(3x + 4y +2)
chistian: 15x + 20y - 5z
 which one is equivilant?  

Answer 1

chistian
15x+20-5z
hope this helps

Answer 2

Christian is right. 4(3x+5y+2z)=12x+20y+8z, but you're not done. 3(x-z)=3x-3z. 12x+3x=15x. 8z-3z=5z. So, 15x+20y-5z is right