\(\left(3x-48\right).6=27.9+8.9-12\\ \left(3x-48\right).6=243+72-12\\ \left(3x-48\right).6=303\\ 3x-48=\dfrac{101}{2}\\ 3x=\dfrac{101}{2}+48\\ 3x=\dfrac{101+48.2}{2}\\ 3x=\dfrac{197}{2}\\ x=\dfrac{197}{6}\)
`(3x-48)xx 6 = 3^3 . 3^2 + 2^3 .3^2 - 12`
`(3x-48)xx 6 =`\(3^{3+2}+8.9-12\)
`(3x-48)xx 6 =`\(3^5+72-12\)
`(3x-48)xx 6 =`\(243+72-12\)
`(3x-48)xx 6 =303`
`3x-48=303:6`
`3x-48=50,5`
`3x=50,5+48`
`3x=98,5`
`x=98,5:3`
`x=197/6`
Vậy `x=197/6`
( 3x - 48 ) . 6 = 8 . 9
( 3x - 48 ) = 243 + 72 - 12
( 3x - 48 ) . 6 = 303
3x - 48 = 101 / 2
3x = 101/2 + 48
3x = 101 +48 . 2 / 2
3x = 197 / 2
x = 197/6
