Question

a) |7-4|+|4-7|
b) -8+3.[2-(-1)]
C)|2+3.(-2)|-|3+2.(-3)
d)|5-10|-|10-(-5)|-|-5-(-5)|​

Answer 1

a) |3|+|-3| (jogo de sinal)

3-3=0

b) -8+[6-(-3)]

-8[6+3]

-8+9= 1