Respuesta :
x + x + 1 + x + 2 > 60
3x + 3 > 60
3x > 57
x > 57/3
x > 19
x + 1 = 19 + 1 = 20
x + 2 = 19 + 2 = 21
oldest brother can be at least 21
3x + 3 > 60
3x > 57
x > 57/3
x > 19
x + 1 = 19 + 1 = 20
x + 2 = 19 + 2 = 21
oldest brother can be at least 21