Question

Calcule:
a) – 8 – 9 . (- 6) =
b) |-15| =
c) |15 – 7| + |10 – 4| =
e) 5 + 8 . (-6) – (-9) =
f) – 15 – 6 . (-7) + 10 =
g) – 16 + 7 . [4 – (-3)] =
h) |6 + 8 . (-4)| - |8 + 5 . (- 6)| =
i) |13 - (-2)| - |18 – 22| - |-9 – (-3)| =
j) |2x – 1| quando x = - 5

Answer 1

Oi, bom dia!

Resposta:

a) 46.

b) 15.

c) 14.

e) – 34.

f) 37.

g) 33.

h) 4.

i) 5.

j) 11.

Explicação passo-a-passo:

a) – 8 – 9 · (– 6) =

– 8 – (– 54) =

– 8 + 54 = 46.

b) |– 15| = 15.

c) |15 – 7| + |10 – 4| =

|8| + |6| =

8 + 6 = 14.

e) 5 + 8 · (– 6) – (– 9) =

5 + (– 48) – (– 9) =

5 – 48 + 9 =

14 – 48 = – 34.

f) – 15 – 6 · (– 7) + 10 =

– 15 – (– 42) + 10 =

– 15 + 42 + 10 =

– 15 + 52 = 37.

g) – 16 + 7 · [4 – (– 3)] =

– 16 + 7 · [4 + 3] =

– 16 + 7 · 7 =

– 16 + 49 = 33.

h) |6 + 8 · (– 4)| – |8 + 5 · (– 6)| =

|6 + (– 32)| – |8 + (– 30)| =

|6 – 32| – |8 – 30| =

|– 26| – |– 22| =

26 – 22 = 4.

i) |13 – (– 2)| – |18 – 22| – |– 9 – (– 3)| =

|13 + 2| – |– 4| – |– 9 + 3| =

|15| – 4 – |– 6| =

15 – 4 – 6 =

15 – 10 = 5.

j) |2x – 1| = ?.

Quando x = – 5:

|2 · (– 5) – 1| =

|– 10 – 1| =

|– 11| = 11.

Espero ter te ajudado e bons estudos para você! ;)