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2x + 16 =40 - x por prop. distrivutiva
2x + x = 40 - 16
3x = 24
x= 24/3
x=8
2x + 16 = 40 - x
2x + x = 40 - 16
3x = 24
x = 24/3
x = 8
Respuesta :
x = 8