123 - 5 . ( x + 4 ) = 38
5 . ( x + 4 ) = 123-38
5 . ( x + 4 ) = 85
5 . ( x + 4 ) = 85
( x + 4 ) = 85 : 5
( x + 4 ) = 17
x = 17 - 4
x = 13
Vậy x=13
123 - 5 . ( x + 4 ) = 38
5 . ( x + 4 ) = 123-38
5 . ( x + 4 ) = 85
5 . ( x + 4 ) = 85
( x + 4 ) = 85 : 5
( x + 4 ) = 17
x = 17 - 4
x = 13
123 - 5 . ( x + 4 ) = 38
5 . ( x + 4 ) = 123 - 38
5 . ( x + 4 ) = 85
x + 4 = 85 : 5
x + 4 = 17
x = 17 - 4
x = 13
123 - 5 . [ x + 4 ] = 38
5 . [ x + 4 ] = 123 - 38
5 . [ x + 4 ] = 85
x + 4 = 85 : 5
x + 4 = 17
x = 17 - 4 = 13
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