Hej!
5 * x - 7 - x = 9 - 2 * x - 4
5x - 7 - x = 9 - 2x - 4
5x - x + 2x = 9 - 4 + 7
6x = 12 / : 6
x = 2
spr :
L = 5 * 2 - 7 - 2 = 10 - 9 = 1
P = 9 - 2 * 2 - 4 = 9 - 4 - 4 = 1
L = P
Pozdrawiam! - Julka