Question

Si me colaboran les agradecería mutuamente ❤️️

Answer 1

a) - 5 + 6 - ( - 6) + 7 - ( -8)

= - 5 + 6 + 6 + 7 + 8

= 22

b) 9 + ( - 6) + ( - 6) - ( - 5)

= 9 - 6 - 6 + 5

= 2

c) 8 . 2 + ( - 10) . ( - 9)

= 8×2 + ( - 10) × ( - 9)

= 16 + ( - 10)(-9)

= 16 +(90)

= 16 + 90

= 106

d) (-12).( - 15) - 8 . ( - 8)

= (-12)×(- 15) - 8×(-8)

= (180)-8(-8)

= 180+64

= 244