Posted by Jeannie on .
First, I really stink @ Algebra.
How do combination of signed numbers work? I keeping getting 6 but for some reason I don't think its right.
1(6+1)
16+1
5+1=6

Algebra 
PsyDAG,
Your notation is confusing; is the last 1 negative or positive?
1  (6) + (1) = 1 + 6 1 = 4
1  (61) = 1  (7) = 1 + 7 = 6
1  (6+1) = 1 (5) = 1 + 5 = 4
Remember that a negative times a negative = a positive. Do operations within parentheses first.