Question

1)calcule as expressões numericas: a)-20+30+50-80-100+40

Answer 1

-20+30+50-80-100+40=

1° passo: Resolver os inteiros (30+50)

-20+80-80-100+40

2° passo: Resolver 80-80

-20-100+40

3° passo: Resolver -20-100

-120+40

4° passo: Resolver -120+40

-80