Question

a) +3+0-1-[ 1-( 2-4 )]= ???

b) 0-[ -5-( -7-5 )]= ???

c) -(-35+40)-{5-[10+(-7-8)]}=???

d) -[-(-8)] +6+8= ?????

PRECISO DISSO URGENTE!
Pfvr me ajudem!

Answer 1

A) +3+0-1-[1-(2-4)]= 
3+0-1-[1-(-2)]=
3+0-1-[1+2]=
3+0-1-3=
-1
B) 0-[-5-(-7-5)]=
-[-5-(-12)]
-[-5+12])
-7
C) -(-35+40)-{5-[10+(-7-8)]}
-(+5)-{5-[10+(-15)]}
-5-[5-(10-15)]
-5-(5+5)
-5-(+10)
-15
D) -[-(-8)]+6+8=
-8+6+8=
+6