7(6)+14
This could be seen as the answer because the 7 has already been distributed to the two which is just 7*2 which is 14. The problem then gives you what a equals so 7(6)+14 would still equal out as if it were 7(6+2).
For a better explanation you could see that 7(6)+14 simplifies ti 42+14 which then equates to 56. You can the. Do the given expression 7(6+2) and simplify and get 7(8) then multiply and you’ll get 56 once again.