Question

Ayudenme
2 (7-4)+(1-5)+8=
-4 (2-3-1)+2 (8-5)+3(4-5)=
-6+[3-[4-2 (4-7)]]=
8-{5-4 [-6+7 (5-2)]-3}=
-{-6+4 [2-5 (4-3(4-3)+2 (7-3))]+2}-1=
6-[4-3 (4-2)]-(7-5 [4-2 (7-1)]}=
-2+{-3-[7+4 (-2+5)]}-4=
12+3 {-6+2 [5-4 (3-2)+5 (7-8)]-5}=
-2 (-7+11)-5-{-2+(3+5)-[4-(2+3)]}=
__
-11+7-2 {-4+1-[-2 (-3+4)-2+4+7-8]-4}

Answer 1

2(3)+4+8=18

-4(-2)+2(3)+3(-1)=
8+6-3=11

-6+(3-(4-2(-3)))=
-6+(3-(4+6))
-6+(3-10)
-6-7=-13