a) ( 3 . x + 24 ) . 32 = 35
( 3 . x + 24 ) . 9 = 243
3 . x + 24 = 243 : 9
3 . x + 24 = 27
3 . x = 27 - 24
3 . x = 3
x = 3 : 3
x = 1
Vậy x = 1
a) ( 3 . x + 24 ) . 3^2 = 3^5
( 3 . x + 24 )=3^5 : 3^2
( 3 . x + 24 ) =3^3
( 3 . x + 24 ) = 27
3. x =27 -24
3. x = 3
x = 3 : 3
x = 1
b) 3 . ( x - 4 ) + 146 = 20^2 + 46
3 . ( x - 4 ) + 146 = 400+46
3 . ( x - 4 ) + 146 = 446
3 . ( x - 4 ) =446-146
3 . ( x - 4 ) = 300
x - 4 = 300 : 3
x - 4 =100
x =100+4
x= 104
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