1). 3+(10)+6
2). (-3)+3+12
3). (-3)-6
4). 3-(-2)
5). 5-3-(-2)
6). 7-(-6)-7

Which expression shows the sum of the polynomials with like terms grouped together

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

What is the difference between the equations of a vertical and a horizontal line?