Question

Calcule x+y para:

a) x = + 5 e y = +7
b)x= -3 e y = -7
c) x = +8 e y = +11
d) x= -15 e y = -10​

Answer 1

a)

$5 + 7 = 12$

b)

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

c)

$8 + 11 = 19$

d)

$- 15 + ( - 10) = - 25$