Question

(3/7 + 4/9) + (-5/21 + 2/3)​

Answer 1

Answer:

(3/7 + 4/9) + (-5/21 + 2/3)

= 3/7 + 4/9 - 5/21 + 2/3

= (27+28)/63 - (5+7)/21

= 55/63 - 12/21

= (55-36)/63

= 19/63

Answer 2

then you dont answer why did you answer just go and answer some other questions