Question

Calcule o valor das expressões (efetue primeiro as divisões):
A) 44 : 2 – 7 =
B) – 7 + 72 : 3 =
C) -20 : (-4) - 1 =
D) 20 – ( -150) : (-25) =
E) 36 : 6 + (-48) : (- 8) =

Answer 1

a)

$44\div \:2-7\\\\=22-7\\\\=15$

b)

$-7+72\div \:3\\\\=-7+24\\\\=17$

c)

$-20\div \left(-4\right)-1\\\\=5-1\\\\=4$

d)

$20-\left(-150\right)\div \left(-25\right)\\\\=20-6\\\\=14$

e)

$36 : 6 + (-48) : (- 8) =\\\\=6+\left(-48\right)\div \left(-8\right)\\\\=6+6\\\\=12$