Algebra Problems.

This is my algebra maths work. I finished this in about an hour and a half.
Leave a comment and if you want give me some problems.

Stone Collection

I worked out there were 96 stones.

First I did was 42 + 7=49 - 11=38 + 12=50 + 33=83 + 10=93 + 3=96

So if Robert he got 35 more he would have 131.