Question

Responde aí pfvr;-;​

Answer 1

a) 4 . (a - 7) - 6a - 9

= 4a - 28 - 6a - 9

= - 2a - 37

b)- 6 . (z + 8) + z + 15

= - 6z - 48 + z + 15

= -5z - 33

c) -(x + 3) + 2x - 10

= -x - 3 + 2x - 10

= x - 13

d) - 8 . (n + 7) + 9 . (-n + 5)

= - 8n - 56 - 9n + 45

= - 17n - 11