Question

A)-5+6-8+7-1
B)2-7+8-3-10
C)-8+3+2-4+7-15
D)7-8+2-1+4-4-6
E)15+6-21+7+2-9+1-4

Answer 1

A= -1
B= -10
C= -15
D= -6
É= -3

Answer 2

Olá Boa Noite !!

a) -5+6-8+7-1= 
-5 +6 = 1 - 8 = -7 + 7=-1

b)2-7+8-3-10
2-7=(-5)+8=3-10=-10

c)-8+3+2-4+7-15
(-8)+3=(-5) + 2 = (-3) -4 = (-7) + 7 =0 - 15 = -15

d) 7-8+2-1+4-4-6
7- 8=(-1 ) +2 = 1 -1 = 0 + 4 =4 -4 = 0 - 6= -6

e) 15+6-21+7+2-9+1-4
15+6 = 21-21 = 0+ 7 = 7 +2 =9 - 9  =0 + 1 =1 - 4 = -3