Respuesta:
x = 7""
Explicación paso a paso:
A-B = x
B-C = 13
A-C = 20
x + 13 = 20
x = 20 - 13
x = 7
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Respuesta:
x = 7""
Explicación paso a paso:
A-B = x
B-C = 13
A-C = 20
x + 13 = 20
x = 20 - 13
x = 7