Question

Calcule corretamente
a) (-5)+(-3)+(-2)+(+1)=
b) (-7)+(-8)+(-1)+(+4)=
c) (-9)+(+2)+(-4)+(-3)=
d) (-1)+(+7)+(+8)+(-6)=
e) (-4) +(+5)+(-6)+(-7)=

Answer 1

a) R=
-5-3-2+1
+1 -10 = -9

b) R=
-7-8-1+4
+4 -16 = -12

c) R=
-9+2-4-3
+2 -16 = -14

d)R=
-1+7+8-6
+15 -7 = +8

e) R=
-4+5-6-7
+5 -17 = -12

espero ter ajudado (?)

Answer 2

a)


$( - 5) + ( - 3) + ( - 2) + ( + 1) \\ - 5 - 3 - 2 + 1 \\ - 9$
b)
$( - 7) + ( - 8) + ( - 1) + ( + 4) \\ - 7 - 8 - 1 + 4 \\ - 12$
c)
$(-9)+(+2)+(-4)+(-3) \\ - 9 + 2 - 4 - 3 \\ - 14$
d)
$(-1)+(+7)+(+8)+(-6) \\ - 1 + 7 + 8 - 6 \\ 8$
e)
$(-4) +(+5)+(-6)+(-7) \\ - 4 + 5 - 6 - 7 \\ - 12$