Respuesta :

Answer:

5

Step-by-step explanation:

QR / PS = QP / SR

2x + 3 / 4x - 7 = 7 / 7

2x + 3 / 4x - 7 = 1

2x + 3 = 4x - 7

4x - 2x = 3 + 7

2x = 10

x = 10 / 2

x = 5

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