(4 - 5)(4x - 5) = (10x - 3)(7 - 2)?
(4 - 5)(4x - 5) = (10x - 3)(7 - 2).
(4 - 5)(4x - 5) = (10x - 3)(7 - 2).
En resumen
16x - 20 - 20x + 25 = 70x - 20x - 21 + 6 16x - 20x - 70x + 20x = - 21 + 6 - 25 + 20 - 54x = - 20 x = 20 / 54 x = 10 / 27.
16x - 20 - 20x + 25 = 70x - 20x - 21 + 6
16x - 20x - 70x + 20x = - 21 + 6 - 25 + 20 - 54x = - 20
x = 20 / 54
x = 10 / 27.