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P/Q = 2/3
P = 2/3Q (1)
(P + 20)/(Q + 5) = 3/2
2(P + 20) = 3(Q + 5)
2P + 40 = 3Q + 15
2P - 3Q = - 25 (2)
(1) en (2)
2)(2/3Q) - 3Q = - 25
4/3Q - 3Q = - 25
4/3Q - 9/3Q = - 25
- 5/3Q = - 25
- 5Q = - 25x3
Q = - 75/-5 Q = 15
En (1)
P = 2/3(15)
P = 30/3 P = 10
Los números son 10 y 15