Question

ayuda plis responda lo que es por favor

Answer 1

Explicación paso a paso:

1era fila :

$a + b + c \\ = ( - 4) + ( - 7) + (8) \\ = - 4 - 7 + 8 \\ = - 3$

$b + c \\ = ( - 7) + (8) \\ = - 7 + 8 \\ = 1$

$a + c \\ = ( - 4) +( 8) \\ = - 4 + 8 \\ = 4$

$a + b \\ = ( - 4) + ( - 7) \\ = - 4 - 7 \\ = - 11$

2da fila :

$a + b + c \\ = ( 5) + ( - 2) + (4) \\ = 5 - 2 + 4 \\ = 7$

$b + c \\ = ( - 2) + (4) \\ = - 2 + 4 \\ = 2$

$a + c \\ = 5 + 4 \\ = 9$

$a + b \\ = (5) + ( - 2) \\ = 5 - 2 \\ = 3$

3era fila :

$a + b + c \\ = ( - 8) + ( - 3) + (9) \\ = - 8 - 3 + 9 \\ = - 2$

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

$a + c \\ = ( - 8) + (9) \\ = 1$

$a + b \\ = ( - 8) + ( - 3) \\ = - 8 - 3 \\ = - 11$

4ta fila :

$a + b + c \\ = (6) + ( - 9) + (12) \\ = 6 - 9 + 12 \\ = 9$

$b + c \\ = ( - 9) + (12) \\ = - 9 + 12 \\ = 3$

$a + c \\ = 6 + 12 \\ = 18$

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

Answer 2

Respuesta:

Explicación paso a paso: