Question

Calcule o valor das expressões numéricas
e) (+4) + [(+3) + (-7) + (+1)
f) - (-3) + {(+8) + (10)]}

Answer 1

e) (+4)+[(+3)+(-7)+(+1)
4+ (3-7+1)
4+(-3)
4-3
1

f) -(-3)+{(+8)+(10)]}
3+{8+10}
3+18
21

Answer 2

e) (+4)+[(+3)+(-7)+(+1)
4+ (3-7+1)
4+(-3)
4-3
1

f) -(-3)+{(+8)+(10)]}
3+{8+10}
3+18
21