500-99+5x66-9+500-3300-y (of y = 400)
just to see of any one cn get this and for points and the next one

600+90-90x7+99-8+y-x5-7+12-9 of x =20 and y =70

i'm assuming it's looking for the missing length, which should be 4cm

hope this !

for the points! : )

7

step-by-step explanation:

i'm assuming you need to figure out how many campers go into each tent.

i got the answer by:

24+4=28

28/4=7  

it is true

step-by-step explanation:

all the combinations add up i used   calculator