Question

elimine os parenteses e calcule
a) 7-(6)-(8)=
b)-8+(-6)-(+3)=
c)5-6(+7)+1=
d)-28+7+(+12)=
e) -21-7-6(-15)=
f)10-(-8)+(-9)-(-12)=

ME AJUDEM PFVR E PARA AMANHA

Answer 1

a)7-6-8=-7
b)-8-6-3=-17
c)5-6+7+12= 7
d)-28+7+12=-9
e)-21-7-6-15 = -49
f)10+8-9+12=21