Respuesta:
J = 2S
J = 2(R - 10)
S = R - 10
R = 4x
Explicación paso a paso:
J + S + R = 34
2(R - 10) + R - 10 + 4x = 34
2R - 20 + R - 10 + 4x = 34
3R - 30 + 4x = 34
3R + 4x = 64
Reemplazamos R:
3(4x) + 4x = 64
12x + 4x = 64
16x = 64
x = 4
J = 2(4x - 10)
J = 2(4(4) - 10)
J = 2(6)
J = 12
S = 4x - 10
S = 4(4) - 10
S = 6
R = 4x
R = 4(4)
R = 16
El mayor es Rodrigo con 16 años.
