2 câu trả lời
`6/(x - 3) = 9/(2x - 7)`
`6(2x - 7) = 9(x - 3)`
`12x - 42 = 9x - 27`
`12x - 9x = 42 - 27`
`3x = 15`
`x = 15 : 3`
`x = 5`
Vậy `x = 5`
`6/(x-3) = 9/(2x-7)`
`=> 6(2x - 7) = 9(x - 3)`
`=> 12x - 42 = 9x - 27`
`=> 12x - 9x = -27 + 42`
`=> 3x = 15`
`=> x = 15 : 3`
`=> x = 5`
Vậy `x = 5`