Question

Efetue

-10+40+50-70+100

Valendo 20 pontos

Answer 1

-10+40=30
30+50=80
80-70=10
10+100=110

A resposta é 110


Espero ter ajudado

Answer 2

Vamos efetuar da esquerda pra direita

$~~$

Veja:

$\Rightarrow~~\underbrace{-10+40}+50-70+100$

$\Rightarrow~~~~~~~~\underbrace{30+50}-70+100$

$\Rightarrow~~~~~~~~~~~~\underbrace{80-70}+100$

$\Rightarrow~~~~~~~~~~~~~~~~\underbrace{10+100}$

$\Rightarrow~~~~~~~~~~~~~~~~~~\boxed{~110~}~~\to~~resposta$

$~~$

Att. Nagovaskov

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