Explicación paso a paso:
[tex]2(x + 3)(x + 4) = (2x + 5)(x - 3) \\2( {x}^{2} + 7x + 12) = 2 {x}^{2} - x - 15 \\ 2 {x}^{2} + 14x + 24 = 2 {x}^{2} - x - 15 \\ [/tex]
CANCELA EL 2X²
[tex]14x + 24 = - x - 15 \\ 15x = - 39 \\ x = - \frac{ 39}{15} simplificas \\ x = - \frac{13}{5} [/tex]
