[tex]a + b + c = 72 \\ b = a + 1 \: \\ c = a + 2 \\ a + a + 1 + a + 2 = 72 \\ 3 \times a + 3 = 72 \\ 3 \times a = 72 - 3 \\ 3 \times a = 69 \\ a = 69 \div 3 \\ a = 23 \\ b = 23 + 1 \\ b = 24 \\ c = 23 + 2 \\ c = 25 [/tex]
R:numerele sunt 23 24 si 25
Sper ca te am ajutat
