Question

Ayuda con las operaciones

Answer 1

Explicación paso a paso:

a) 7 + [-2 - (-5 + 8)] = 7 + [-2 - 3] = 7 - 5 = 2

b) - 9 - [-10 + (15-25)] = - 9 - [-10 - 10]

= - 9 - [-20] = -9 + 20 = 11

c)-10 + 20 - [-8 - (9 + 6 - 13)]

- 10 + 20 - [-8 - 2]

- 10 + 20 - [-10]

- 10 + 20 + 10 = 20