Answer:
-5y
Step-by-step explanation:
We are to simplify the expression
5x - 5(y+x)
Open the bracket by applying the distributive law;
5x-(5(y)+5(x))
5x - (5y+5x)
5x - 5y - 5x
Collect like terms to have:
5x - 5x - 5y
0-5y
= -5y
Hence the simplified form is -5y