Question

what is the value of the expression 4 (x+y) when the x=6 and y=2.4

Answer 1

The answer is 33.6.

Add 6 to 2.4 and you get 8.4.
You then multiply 8.4 to 4 and get 33.6.

Answer 2

6 + 2.4=8.4. Multiply that by 4 which makes 33.6.