Question

Operações em z
Resolva as expressões:
A)(-5)-(3)-(+7)-(-4)=
B)1+(+6)-(-2)+(-9)=
C)(-4)-(-3)+(+2)-(+1)+(-8)=

Answer 1

A) (-5)-(3)-(+7)-(-4)
-5-3-7+4
-15+4 = -11
B) 1+(+6)-(-2)+(-9)
1+6+2-9 
9-9 =0
C) (-4)-(-3)+(+2)-(+1)+(-8)
-4+3+2-1-8
-13+5
-8

Answer 2

Boa tarde!

A) (-5)-(+3)-(+7)-(-4)
-5-3-7+4
-11

B) 1+(+6)-(-2)+(-9)
1+6+2-9
0

C) -4-(-3)+(+1)+(-8)
-4+3+1-8
-8