Respuesta:
x = 6
Explicación:
18 - x = 6 + x
18 - 6 = x + 2
12 = 2x
6 = x
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Respuesta:
x = 6
Explicación:
18 - x = 6 + x
18 - 6 = x + 2
12 = 2x
6 = x