Question

30 ___ a solution of 12 + x = 42

is it or is it not

Answer 1

Yes it is a solution, if you add 30 to 12 you’ll get 42

Answer 2

Yeah, the solution for the equation is 30.

Explanation:

12 + x = 42

⇒ x = 42 - 12

∴ x = 30