Question 97827
Let x=one of the house numbers
Then x+2=the other house number

Now we are told that:

 x+x+2=58  subtract 2 from both sides

x+x+2-2=58-2  collect like terms

2x=56  divide both sides by 2

x=28-------------------------one of the house numbers

x+2=28+2=30------------------the other house number

CK

28+30=58
58=58

Hope this helps---ptaylor