​ solve

Simplify the following:
-23 - -5 + 3 - -20

Multiply -1 and -5 together.
-(-5) = 5:
-23 + 5 + 3 - -20

Multiply -1 and -20 together.
-(-20) = 20:
-23 + 5 + 3 + 20 

Evaluate 5 + 3 + 20 using long addition=28

Subtract 23 from 28.
  =5