Question

$\frac{x + 5}{3} = \frac{5}{3 + x}$
х+5—3=5—3+х​

Answer 1

Пошаговое объяснение:

$\frac{x + 5}{3} = \frac{5}{3 + x} \\ (x + 5)(x + 3) = 15 \\ {x}^{2} + 3x + 5x + 15 - 15 = 0 \\ {x}^{2} + 8x = 0 \\ x(x + 8) = 0 \\ x = 0 \: \: \: \: x + 8 = 0 \\ x = 0 \: \: \: \: x = - 8$

х+5-3=5-3+х

х-3=-3х

4х=3

х=3/4 = 0.75