Respuesta :

Answer:

7x - 7y + 21

Step-by-step explanation:

7(x - y + 3)

=> 7 × x - 7 × y + 7 × 3

=> 7x - 7y + 21

Answer:

[tex]7(x - y + 3) = 7x - 7y + 21 \\ thank \: you[/tex]