Question

Daca x+y=17 si x/y=3/5, sa se afle x-y

Answer 1

x + y = 17

x/y = 3/5 => x/3 = y/5 = k
x/3 = k → x = 3k
y/5 = k → y = 5k

3k + 5k = 17 → 8k = 17 → k= 2,125

x = 3 × 2,125 = 6,375

y = 5 × 2,125 = 10,625

x - y = 6, 375 - 10,625 = -4,250