yeah so the first is 39 kg and the second one will be $57.
you get these because you find how much each kg costs.
for both equations each kg equals 3, so
divide 135 by 45 and you get 3 then divide 117 by 3 and you get 39
second one you divide 99 by 33 and you 3 then you multiply 3 by 19.
