Simplify: (7+2) – (5+3+1)-1.
Choose the correct choice from the following choices
A) -1 B) –2 C) 1 D) 2 E) 0
Solution:   (7+2) – (5+3+1)-1   =9-5-3+1-1   =9-8+1-1   =2-1= 
<gadget id="calculator">2-1</gadget>
<output>1</output>
1   Answer: (1)
<result>C</result>
Simplify: (7+2) – (5+3+1)-1.