Question

What is equal to -15? a) -5+10 b)-5-10 c)-5+(-10) d) -5-(-10)

Answer 1

 - 5 + 10 = 5 ( False )
- 5 - 10 = - 15 ( True )
-5 + ( - 10 ) = - 15 ( True )
-5 - ( - 10 ) = - 5 + 10 = 5 ( False ) ;
The correct answers are b) and c).