Resposta :
Resposta:
a)6+(-9+1)= -2
b)8-(-6+10)=4
c)-10+(6-4)= -8
d)2+(2+5-7)= 2
e)-5 +(2-4)-(7-1)= -13
f)(-5+3)-(5-9)+(8-1)-11= -2
Resposta:
a)6+(-9+1)= -2
b)8-(-6+10)=4
c)-10+(6-4)= -8
d)2+(2+5-7)= 2
e)-5 +(2-4)-(7-1)= -13
f)(-5+3)-(5-9)+(8-1)-11= -2