Question

What is the value of 7 (4+x) when x =5

Answer 1

This is a simple substitution task. Simply replace x with 5, thus the expression becomes:

7 (4+5).

Using the rules of calculation means solving the expessions in the brackets first thus you are left with 7(9) = 7*9

Answer 2

63
5+4=9
9*7=63
Hope this helps