Question

Сумма двух чисел равна 749, а из разность равна 109. Найдите эти числа

Answer 1

$left { {{x+y=749} atop {x-y=109}} right. \ left { {{2x=858} atop {x-y=109}} right. \ left { {{x=429} atop {x-y=109}} right. \ left { {{x=429} atop {429-y=109}} right. \ left { {{x=429} atop {y=429-109}} right. \ left { {{x=429} atop {y=320}} right.$