Question

Resuelve la ecuación

Answer 1

Respuesta:

$(x + 6)(x - 5) - 1.4 = - x(2 - x) + \frac{3}{5} x \\ {x}^{2} - 5x + 6x - 30 - \frac{14}{10} = - x(2 -x) + \frac{3}{5} x \\ {x}^{2} + x - 30 - \frac{7}{5} = - 2x + {x}^{2} + \frac{3}{5} x \\ 5( {x}^{2} + x - 30 - \frac{7}{5} ) = 5( - 2x + {x}^{2} + \frac{3}{5}x ) \\ 5 {x}^{2} + 5x - 150 - 7 = - 10x + 5 {x}^{2} + 3x \\ 5 {x}^{2} + 5x - 157 = - 7x + 5 {x}^{2} \\ 5 {x}^{2} - 5 {x}^{2} + 5x + 7x = 157 \\ 12x = 157 \\ x = \frac{157}{12}$