Question

Calcule:

a) ( + 5) – (- 3) + ( - 9) c) – 15 + ( - 7 + 4 ) – 6 + ( - 8 )

b) – ( - 3 ) + ( + 12 - 15 ) – ( - 34) d) + ( - 23) + (+1) – (9 – 25) + 12

Answer 1

Resposta:

a) −1

b) 34

c) −32

d) 6

Explicação passo-a-passo:

a)

=8+(−9)=

=−1

b)

=3+(+(−3))−(−34)=

=0−(−34)=

=34

c)

=−15+(−3)−6+(−8)=

=−18−6+(−8)=

=−24+(−8)=

=−32

d)

=+(−22)−(−16)+12=

=+(−6)+12=

=6