if 5x+4 is to 3x-5 is the duplicare of 3 is to 3 find x
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(3x+1):(5x−4) is the duplicate ratio of 5:6.
Also, the duplicate ratio of 5:6 is 52:62=25:36
∴5x−43x+1=3625
∴108x+36=125x−100
∴125x−108x=36+100
∴17x=136
∴x=17136=8
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