Question

решите уравнение 
$frac{x-14}{x-12} = frac{7}{8}$

Answer 1

(х - 14) / (х - 12) = 7/8
8 * (х - 14) - 7 * (х - 12) = 0
8х - 112 - 7х + 84 = 0
х - 28 = 0
х = 28

Answer 2

ОДЗ:х не равен 12
8х-112=7х-84
х=28