Help me out with this please, And maybe you could explain the steps to me >

a =7

Step-by-step explanation:

2/7* a/a+2=2/9

a/a+2=2/9*7/2

a/a+2= 7/9

a=7/9(a+2)

a= 7/(9a+18)

Step-by-step explanation:

77

step-by-step explanation:

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya