Odpowiedź :
Hej!
3x + 2 = 11
3x = 11 - 2
3x = 9 / : 3
x = 3
5x - 3 = x + 6
5x - x = 6 + 3
4x = 9 / : 4
x = 2,25
2(x + 3) = x - 5
2x + 6 = x - 5
2x - x = -5 - 6
x = -11
Pozdrawiam! - Julka
Odpowiedź:
3x+2=11
3x=11-2
3x=9/:3
x=3
5x-3=x+6
5x-x=6+3
4x=9/:4
x=9/4
x=3/2
x=1 1/2
2(x+3)=x-5
2x+6=x-5
2x-x=-5-6
x=-11