Respuesta :
11x +14 -7x -5 = 39 -x
4x +9 = 39 - x
4x +x = 39 -9
5x = 30
x = 30/5
x = 6
verificacion
11*6 +14 -7*6 -5 = 39-6
66 +14 -42 -5 = 33
33 = 33
4x +9 = 39 - x
4x +x = 39 -9
5x = 30
x = 30/5
x = 6
verificacion
11*6 +14 -7*6 -5 = 39-6
66 +14 -42 -5 = 33
33 = 33