Respuesta:
30
Explicación paso a paso:
3x + 120 + 90 + 160 + 130 + 100 +x = 720
600 + 4x = 720
4x = 120
x = 30
ez
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Respuesta:
30
Explicación paso a paso:
3x + 120 + 90 + 160 + 130 + 100 +x = 720
600 + 4x = 720
4x = 120
x = 30
ez