Explicación paso a paso:
(+9)+(-4)= 5
9 - 4 = 5
(+6)+(-6)= 0
6 - 6 = 0
(-8)+(-1)=
-8 - 1 = -9
(-7)+(-5)= -12
-7 - 5 = -12
(+1)+(-4)= -3
1 - 4 = -3
(-4)+(-6)= -10
-4 - 6 = -10
(-5)+(-7)= -12
-5 - 7 = -12
(+3)+(+9)= 12
3 + 9 = 12
(+9)+(+3)= 12
9 + 3 = 12
(+1)+(-2)= -1
1 - 2 =-1
espero te sirva:)<3
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Explicación paso a paso:
(+9)+(-4)= 5
9 - 4 = 5
(+6)+(-6)= 0
6 - 6 = 0
(-8)+(-1)=
-8 - 1 = -9
(-7)+(-5)= -12
-7 - 5 = -12
(+1)+(-4)= -3
1 - 4 = -3
(-4)+(-6)= -10
-4 - 6 = -10
(-5)+(-7)= -12
-5 - 7 = -12
(+3)+(+9)= 12
3 + 9 = 12
(+9)+(+3)= 12
9 + 3 = 12
(+1)+(-2)= -1
1 - 2 =-1
espero te sirva:)<3