if (x-9) : (3x+7) is a duplicate ratio of 4:9 ,find x
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Anonymous:
Still it remains same
Answered by
19
Hey ❗
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↪x - 9 / 3 x + 7 = 4 / 9
↪By cross - multiplying !!
↪We get ,
↪( x - 9 ) ( 9 ) = 3x + 7 ( 4 )
↪9 x - 81 = 12x + 28
↪9x - 12x = 28 + 81
↪- 3x = 109
↪x = - 109 / 3
↪Or if the equation is
↪x - 9 / 3x + 6 = 4 / 9
↪Again by cross multiplying !!
↪( x - 9 ) ( 9 ) = ( 3x + 6 ) ( 4 )
↪9x - 81 = 12x + 24
↪9x - 12x = 24 + 81
↪- 3x = 105
↪x = - 105 / 3
↪x = - 35
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___________________________________________
↪x - 9 / 3 x + 7 = 4 / 9
↪By cross - multiplying !!
↪We get ,
↪( x - 9 ) ( 9 ) = 3x + 7 ( 4 )
↪9 x - 81 = 12x + 28
↪9x - 12x = 28 + 81
↪- 3x = 109
↪x = - 109 / 3
↪Or if the equation is
↪x - 9 / 3x + 6 = 4 / 9
↪Again by cross multiplying !!
↪( x - 9 ) ( 9 ) = ( 3x + 6 ) ( 4 )
↪9x - 81 = 12x + 24
↪9x - 12x = 24 + 81
↪- 3x = 105
↪x = - 105 / 3
↪x = - 35
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