Question

Mary has 2 more video games than John. Together, they have 30 video games.

Answer 1

Answer: Mary has  16 video games.

Step-by-step explanation:

x+(x+2) =30

2x + 2 =30

       -2   -2

2x =28

x= 14  

(14+ 2) = 16

Answer 2

Answer:

16

Step-by-step explanation:

Let assume that the number of video games John has is x, the number of video games Mary has then will be x + 2. Based on this, calculations are made below.

x + (x + 2) = 30

2x = 28

x = 14

Mary has (2 + 14) video games = 16