Simplify: (4 – 5) – (13 – 18 + 2). Pick one: A) 0 B) -2 C) -1 D) 1 E) 2
(4 – 5) – (13 – 18 + 2).   = -1-(13+2-18).   = -1-(15-18).   = -1-(-3).   = -1+3.= 
<gadget id="calculator">-1+3.</gadget>
<output>2</output>
2   correct answer 2
<result>E</result>
Simplify: (4 – 5) – (13 – 18 + 2).