Question

a) 5+ (2-6) =

b) -15 - (23 + 12 ) =

c) (9 - 15 ) + ( 12 -20 ) =

d ) (- 9 + 5 ) - ( - 6 - 8 - 4 ) =

Answer 1

a) 5-4= 1

b) -15-35= -50

c) -6-8= -14

d) -4+18= 14

Answer 2

a)
= 5 + ( 2 - 6)
= 5 + ( - 4)
= 5 - 4
= 1

b)
= - 15 - ( 23 + 12)
= - 15 - (35)
= - 15 - 35
= - 50

c)
= ( 9 - 15) + ( 12 - 20)
= - 6 + ( - 8)
= - 6 - 8
= - 14

d)

= ( - 9 + 5) - ( - 6 - 8 - 4)
= - 4 - ( - 14 - 4)
= - 4 - ( - 18)
= - 4 + 18
= 14