( x + 34 x 9 ) + 47 x 9 = 2184
( x + 34 x 9 ) + 423 = 2184
( x + 34 x 9 ) = 2184 - 423
x + 34 x 9 = 1761
x + 306 = 1761
x = 1761 - 306
x = 1455
Vậy x = 1455
(x+34x9)+47=2184:9
x+306=728/3-47
x=587/3-306
x=-331/3
( x + 34 x 9 ) + 47 x 9 = 2184
( x + 34 x 9 ) + 423 = 2184
x + 306 = 2184 - 423
x + 306 = 1761
x = 1761 - 306
x = 1455
( x + 306 ) + 423 = 2184
x = 2184 - 423
x = 1761 - 306
x = 1455