Question

Si un número es el triple de otro y el doble del mayor menos el triple del menor es 27.hallar el doble del mayor.

Answer 1

Sea

Sea A = mayor = 3x

Sea A = mayor = 3xB = menor = x

Sea A = mayor = 3xB = menor = x2(3x) - 3x = 27

Sea A = mayor = 3xB = menor = x2(3x) - 3x = 276x - 3x = 27

Sea A = mayor = 3xB = menor = x2(3x) - 3x = 276x - 3x = 273x = 27

Sea A = mayor = 3xB = menor = x2(3x) - 3x = 276x - 3x = 273x = 27x = 27/3

Sea A = mayor = 3xB = menor = x2(3x) - 3x = 276x - 3x = 273x = 27x = 27/3x = 9

Sea A = mayor = 3xB = menor = x2(3x) - 3x = 276x - 3x = 273x = 27x = 27/3x = 9mayor = 3x = 3(9) =27

Sea A = mayor = 3xB = menor = x2(3x) - 3x = 276x - 3x = 273x = 27x = 27/3x = 9mayor = 3x = 3(9) =27El doble del mayor

Sea A = mayor = 3xB = menor = x2(3x) - 3x = 276x - 3x = 273x = 27x = 27/3x = 9mayor = 3x = 3(9) =27El doble del mayor2(27)

Sea A = mayor = 3xB = menor = x2(3x) - 3x = 276x - 3x = 273x = 27x = 27/3x = 9mayor = 3x = 3(9) =27El doble del mayor2(27)54

Sea A = mayor = 3xB = menor = x2(3x) - 3x = 276x - 3x = 273x = 27x = 27/3x = 9mayor = 3x = 3(9) =27El doble del mayor2(27)54El número buscado es 54