Respuesta :

The equation is a + 9 = 15

Step-by-step explanation:

Let the number be 'a'

Given that,

A number plus 9 is 15

So,

a + 9 =15

a = 15 - 9

a = 6

The equation needed is,

a + 9 = 15

Answer:6 + 9 = 15

Step-by-step explanation: