Question

(+7)+___=+13
___+(-12)=+36
___+(-7)=-8
(+11)+___=-2​

Answer 1

Respuesta:

(+7)+(+6)=+13

(+48)+(-12)=+36

(-1)+(-7)=-8

(+11)+(-13)=-2

Explicación paso a paso:

Se aplica ley de signos

$( - )( - ) = + \\ ( + )( + ) = + \\ ( - )( + ) = - \\ ( + )( - ) = -$