Question

Ayudenme en estos problemas, con procedimiento por favor
a) - 5 × 3 + 8 - (4 - 1 × 5)
b) - 12 × [ - 6 - 10 × ( - 2 - 3)]
c) - 3 (4 - 2 + 5)
d) - 15 ( - 4) + 2 [ - 3 (2) + (6 - 2 (8))]

Answer 1

Respuesta:

a) - 5 × 3 + 8 - (4 - 1 × 5)

$=-5\times \:3+8-\left(-1\right)\\=-15+8-\left(-1\right)\\=-6$

b) - 12 × [ - 6 - 10 × ( - 2 - 3)]

$-12\times \:\left[-6-10\times \left(-2-3\right)\right]\\=-12\times \:44\\=-528$

c) - 3 (4 - 2 + 5)

$-3\left(4-2+5\right)\\=-3\cdot \:7\\=-21$

d) - 15 ( - 4) + 2 [ - 3 (2) + (6 - 2 (8))]

$-15\left(-4\right)+2\left[-3\left(2\right)+\left(6-2\left(8\right)\right)\right]\\=-15\left(-4\right)+2\left(-16\right)\\=60+2\left(-16\right)\\=60-32\\=28$