Answer:
$136.28
Step-by-step explanation:
Um sorry but i think your missing some info! reply to me and i can help with a question
X+y+z=22
(x+y+z+t)/4=8
subsitute
x+y+z=22
(22+t)/4=8
multiplly by 4
22+t=32
subtract 22
t=10
the fourth number is 10
- 18
2- 20
= -18
Because you do the same thing just going to end up with a negative.
