Respuesta :
Answer:
9( x - y)
Explanation:
7x - 8y + 2x - y
= 7x + 2x - ( 8y + y)
= 9x - 9y
= 9(x - y)
Done :))
Answer: 9x-7y
Explanation :
7x+2x =9x
-8y-y = -7y
Then put together
Explanation :
7x+2x =9x
-8y-y = -7y
Then put together