Question

2)calcule
A) 4-(+2)=
9. 3

B) 7+(-5)=
5. 3

Answer 1

2. 
a)    4 -(+2) = 4 - 2 = 2
       9.3 = 9 + 9 + 9 = 27
 
b)    7+(-5) = 7 - 5 = 2
       5.3 = 5 + 5 + 5 = 15