Question

If:
x = 4 and y = 6 , evaluate the following expression:

3 ( x + y )

Answer 1

expand the brackets and get 12+18 which equals 30
as 3x4=12
and 3x6=18
then add them together

Answer 2

Substitute values of x and y into the expression :
3(4+6)
3(10) = 30