Hej!
x/4 = 3/5
5 * x = 4 * 3
5x = 12 / : 5
x = 2,4
(x - 2)/(x + 3) = 1/2
x + 3 ≠ 0, więc x ≠ -3
2(x - 2) = x + 3
2x - 4 = x + 3
2x - x = 3 + 4
x = 7
Pozdrawiam! - Julka
