If x² - y² = 44, and x - y = 12, then y =

X-y = 12 = > y = x-12

x^2 - y^2 = 44

x^2 - (x-12) ^2 = 44

x^2 - (x^2 - 24x + 144) = 44

24x - 144 = 44

24x = 188

x = 188/24 = 94/12 = 47/6

y = x - 12 = 47/6 - 12 = 47/6 - 72/6 = - 25/6

ответ: 25/6 (двадцать пять шестых)