Question

Resolva as expressões a seguir: a) –(–7) + (+15) – (+32) + (–40) – (–25) + (+40) = b) –497 – (–801) + (–92) + (–55) + (–2) – (+1)

Answer 1

Resposta:

A= 15

B = 154

Explicação passo-a-passo:

Resolva as expressões a seguir:

a)

= –(–7) + (+15) – (+32) + (–40) – (–25) + (+40) =

= 7 + 15 - 32 - 40 + 25 + 40

= 22 - 32 + 25

= - 10 + 25

= 15

b) –497 – (–801) + (–92) + (–55) + (–2) – (+1)

= - 497 + 801 - 92 - 55 - 2 - 1

= 801 - 497 - 95 - 55

= 801 - 497 - 150

= 801 - 647

= 154