Question

Opera
a) (5 - 7)-[(-3)+(-6)]



b) (-8) +[(+7)-(-4)+(-5)]



c) (+9)- [(+3)-(3 - 12)-(+8)]



d) [(+6)-(-8)] – [(-4)-(-8)]



e) 3 - [(5-8)-(3-6)]



f) 1-(-3)+[4-(1-3)]

Answer 1

a) (5 - 7)-[(-3)+(-6)]

(-2)-(-3-6)

-2+3+6

9-2

= 7

b) (-8) +[(+7)-(-4)+(-5)]

(-8) + (7+4-5)

-8 +7 +4 -5

11 - 13

= -2

c) (+9)- [(+3)-(3 - 12)-(+8)]

9 - (3-3+12-8)

9 -3+3-12+8

-12 + 8 +9

= 5

d) [(+6)-(-8)] – [(-4)-(-8)]

(6+8) - (-4+8)

14 - 4

= 10

e) 3 - [(5-8)-(3-6)]

3 - ((-3)-(-3))

3-0

= 3

f) 1-(-3)+[4-(1-3)]

1+3 + (4-1+3)

4 + 6

= 10