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2do numero: x+18
PLANTEO DE LA ECUACION:
x/(x+18) = 5/8
8x = 5(x+18)
8x = 5x +90
8x-5x = 90
3x = 90
x = 90/3
x = 30
1er numero: x = 30
2do numero: x+18 = 30+18 = 48