Question

33-Copie e efetue as adições:
a) (-7)+(-1)+(-24)
b) (-9)+(-6)+(-3)+(-5)
c) (-20)+(+3)+(-7)
d) (-10)+(+3)+(+9)
e) (-10)+(+10)+(-8)+(+8)

Answer 1

a )
$( - 7) + ( - 1) + ( - 24) = \\ - 7 - 1 - 24 = \\ - 32$
b )
$( - 9) + ( - 6) + ( - 3) + ( - 5) = \\ - 9 - 6 - 3 - 5 = \\ - 15 - 8 = \\ - 23$
c )
$( - 20) + ( + 3) + ( - 7) = \\ - 20 + 3 - 7 = \\ - 17 - 7 = \\ - 24$
d )
$( - 10) + ( + 3) + ( + 9) = \\ - 1 0 + 3 + 9 = \\ - 7 + 9 = \\ 2$
e )
$( - 10) + ( + 10) + ( - 8) + ( + 8) = \\ - 10 + 10 - 8 + 8 = \\ 0$