Respuesta :

To solve for y we have to use the INVERSE OPERATION of addition which is subtraction. Lets do it:-

10 + y = 28
y = ?
28 - 10 = y
28 - 10 = 18
y = 18

CHECK OUR WORK:-

10 + y = 28
y = 18
10 + 18 = ?
10 + 18 = 28
We were RIGHT!!!!

So, y = 18.

Hope I helped ya!! xD
Use the inverse operation to solve for x. 

10 + y = 28

[tex]10 + y = 28[/tex]

[tex]y = 28 - 10[/tex]

Answer:  [tex]y = 18[/tex]