Question

(7)+(12)=

7+(-7)=

(-5)+(-2)=

Answer 1

Explicación paso a paso:

$(7) + (12) \\ = 7 + 12 \\ = 19$

$(7) + ( - 7) \\ = 7 - 7 \\ = 0$

$( - 5) + ( - 2) \\ = - 5 - 2 \\ = - 7$

Answer 2

Hola!

Respuesta:

$(7) + (12) = 9$

$7 + ( - 7) = 0$

$( - 5) + ( - 2) = - 7$