Happy Face & Sad Face Math Puzzle | with Answer

Maths Puzzle with Answer

Can you solve this?

Happy Face + Sad Face = 13

Happy Face x Sad Face = 42

Sad Face - Happy Face = 1

Sad Face = ?

ANSWER

Sad Face = 7
Happy Face = 6

Explanation
Happy Face (6) + Sad Face (7) = 13
Happy Face (6) x Sad Face (7) = 42
Sad Face (7) - Happy Face (6) = 1