22 is the average of the numbers 20,17,24,18,29, and x is what I guess the qusetion is
count them
6 numbers
(20+17+24+18+29+x)/6=22
(108+x)/6=22
times both sides by6 to clear fraction
108+x=132
minus 108 from both sides
x=24
The answer to this is 6.1 days
-6/7p+1/7 um Idk what you wanted me to do but I added -4/7p with -2/7p
