Question

POR FAVOR SÓ RESPONDA SE SOUBER, NA DÚVIDA NÃO RESPONDA. OBRIGADA POR ME ENTENDER.

6). Determine o valor da soma algébrica:
a) – (+9 – 15 + 19)
b) 5 + (– 12 +16 – 18)
c) – 42 – (–28 +42 –14)
d) – 34 – (+64 – 82 +26)
e) – (+18) + (–15) + (+19) + (–12)

Answer 1

Resposta:

a) - (+9 - 15 +19)

- (-6 +19)

- (+13) = -13

b) 5 + (– 12 +16 – 18)

5 + ( +4 - 18)

5 + (-14)

5 - 14 = -9

c) – 42 – (–28 +42 –14)

-42 - ( +14 - 14 )

-42 - 0 =-42

d) – 34 – (+64 – 82 +26)

- 34 - (-18 + 26)

- 34 - (+8)

-34 -8 = -42

e) – (+18) + (–15) + (+19) + (–12)

-18 -15 +19 -12

-33 +7 = -26