Respuesta:
X = 50
Explicación paso a paso:
x + 20 = (60 + 80)/2
x + 20 = 140/2
x + 20 = 70
x = 50
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Respuesta:
X = 50
Explicación paso a paso:
x + 20 = (60 + 80)/2
x + 20 = 140/2
x + 20 = 70
x = 50