Week 5 homework:

In general explain the pattern for finding:

a) Two negative numbers added together.  (-a + -b)

b) A positive number and a negative number added together. (a + -b or -a + b)

c) A negative number subtracted from a positive number. (a - -b)

d) A negative number subtracted from a negative number (-a - -b)

Choose 3 of the 4.  The 4th is extra credit.  Be sure to use complete sentences and explain precisely.