sorry
(7x - 11 ) 3= 32 + 100 . 100 + 1
(7x - 11 ) 3 = 1000
(7x - 11 ) 3 = 103
=> 7x + 11 = 10
=> 7x = 10 + 11 = 21
=> x = 21 : 1 = 3
(7x - 11 ) 3 = 32 + 100 . 100 + 1
(7x - 11 ) 3 =
(7x - 11 ) 3 = 1000
(7x - 11 ) 3 = 103
=> 7x + 11 = 10
=> 7x = 10 + 11 = 21
=> 7x = 21 : 1 = 3