Question

suprimir previamente los paréntesis y luego resolver

a) + (+9) - (+6)=
b) - (+7) + (-3)=
c) + (-5) - (-5)=
d) - (-2) - (-8)=
e) + (-4+9) - (+6)=
f) - (-10) + (+3-15)=
g) - (-3+11-8+6)=
h) + (-1+4) - (+17-6)=
​

Answer 1

a)

$+ ( + 9) - ( + 6) \\ = 9 - 6 \\ = 3$

b)

$- ( + 7) + ( - 3) \\ = - 7 - 3 \\ = - 10$

c)

$+ ( - 5) - ( - 5) \\ = - 5 + 5 \\ = 0$

d)

$- ( - 2) - ( - 8) \\ = 2 + 8 \\ = 10$

e)

$+ ( - 4 + 9) - ( + 6) \\ = - 4 + 9 - 6 \\ = - 10 + 9 \\ = - 1$

f)

$- ( - 10) + ( + 3 - 15) \\ = 10 + 3 - 15 \\ = 13 - 15 \\ = - 2$

g)

$- ( - 3 + 11 - 8 + 6) \\ = 3 - 11 + 8 - 6 \\ = 3 + 8 - 11 - 6 \\ = 11 - 17 \\ = - 6$

h)

$+ ( - 1 + 4) - ( + 17 - 6) \\ = - 1 + 4 - 17 + 6 \\ = 4 + 6 - 1 - 17 \\ = 10 - 18 \\ = - 8$