Question

I have some stickers in my collection.

My sister has 29 more than I do.
Together we have 773 stickers. How
many stickers are in my collection?

Answer 1

Explanation:

s=y+29

s+y=773, using s from above makes this

y+29+y=773

2y+29=773

2y=744

y=372

So you have 372 stickers in your collection.