SOLUTION: -3{[(-2-3)-(-1-1)-2]-1}+2

Question 131965:
-3{[(-2-3)-(-1-1)-2]-1}+2
Found 2 solutions by rapaljer, checkley71:
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
Start with the inside and work your way out:
-3{[(-2-3)-(-1-1)-2]-1}+2
-3{[(-5)-(-2)-2]-1}+2
-3{[(-5)+2-2]-1}+2
-3{[(-5)]-1}+2
-3{-5-1}+2
-3{-6}+2
18+2
20

R^2
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
-3{[(-2-3)-(-1-1)-2]-1}+2
-3{[-5-(-2)-2]-1}+2
-3{[-5+2-2]-1}+2
-3{[-5]-1}+2
-3{-6}+2
18+2=20 ANSWER.