El profesor se sorprenderá mucho al ver tu solución correcta😉
(3*x + 7)*(8*x + 1) = (6*x - 7)*(4*x - 1) + 63*x
(3*x+7)*(8*x+1) = (6*x-7)*(4*x-1)+63*x
7 + 24*x^2 + 59*x = (6*x-7)*(4*x-1)+63*x
(3*x+7)*(8*x+1) = 7 - 34*x + 24*x^2 + 63*x
30*x = 0
x = 0 / (30)