Question

Calcule:
a) ( - 3 ) + ( + 2 )
b) -2 + 5 – 10 + 7
c) ( -200 ) : ( -5)
d) (20 ) . ( -4 )
e) 30 – ( - 5 ) . 10​

Answer 1

Explicação passo-a-passo:

$a)( - 3) + ( + 2) = - 3 + 2 = - 1$

$b) - 2 + 5 - 10 + 7 = 0$

$c)( - 200) \div ( - 5) = 40$

$d)(20).( - 4) = - 80$

$e)30 - ( - 5).10 = 30 + 5.10 = 30 + 0 = 80$