Answer:
Step-by-step explanation:
for this situation we do distributive property{in distributive property [in this situation ] we will (multiply 4 by m & n) - (multiply 5 by m & n)=
4m + 4n - 5m - 5n =
(4m -5m) - (4n - 5n) =
-1m - (- 1n) =
-1m + 1n
and always remember to go in alphabetical order = m comes before n, x comes before y or z.
