Resposta :
Resposta:
a)(+3)+(-2)+(+1)=
+3-2+1= +2
b) (-7)-(+2)-(-4)=
-7-2+4= -5
c)(-3)+(-5)-(-6)=
-3-5+6= -2
d)10-(-4)-(+6)=
10+4-6=
+8
e)(-20)+(-10)+(+5)=
-20-10+5= -25
f) -(-8)+(-6)-(+7)=
+8-6-7=-5
Resposta:
a)(+3)+(-2)+(+1)=
+3-2+1= +2
b) (-7)-(+2)-(-4)=
-7-2+4= -5
c)(-3)+(-5)-(-6)=
-3-5+6= -2
d)10-(-4)-(+6)=
10+4-6=
+8
e)(-20)+(-10)+(+5)=
-20-10+5= -25
f) -(-8)+(-6)-(+7)=
+8-6-7=-5