Answer:
The expressions 3x+3(x+y) and 6x+3y are equivalent.
To see this, we can use the distributive property of multiplication over addition. For example, the distributive property states that a(b+c)=ab+ac.
In this case, we have a=3 and b+c=x+y. So, we can distribute the 3 to get:
3x+3(x+y)=3x+3x+3y=6x+3y
Therefore, the expressions 3x+3(x+y) and 6x+3y are equivalent.
Explanation: