AoDi555 AoDi555

23-04-2020
Mathematics

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mirai123 mirai123

23-04-2020

Answer:

Note that [tex]PQ + QR = PR[/tex]:

Once:

[tex]PR = 15x-11\\PQ=3x+6[/tex]

[tex]PQ + QR = PR\\\\(3x+6)+QR=(15x-11)\\\\QR=(15x-11)-(3x+6)\\\\QR=15x-11-3x-6\\\\QR=12x-17\\[/tex]

Therefore, the answer is letter B

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