Hej!
2(2x + 4) + 2(x + 5) = 42
4x + 8 + 2x + 10 = 42
6x + 18 = 42
6x = 42 - 18
6x = 24 / : 6
x = 4
2 * 4 + 4 = 8 + 4 = 12 dm
4 + 5 = 9 dm
Pozdrawiam! - Julka
