Respuesta :

Let 'x' represent the missing number.

18 + 32 = x + 3   Add 18 and 32
       50 = x + 3   Subtract 3 from both sides
       47 = x          Switch the sides to make it easier to read
         x = 47
 Now, check your answer

18 + 32 = 47 + 3   Add on both sides
       50 = 50

So, 18 + 32 = 47 + 3