Respuesta:
5
Explicación paso a paso:
7x - 15 = 3x + 5
7x - 3x = 5 + 15
4x = 20
x = 20 / 4
x = 5
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Respuesta:
5
Explicación paso a paso:
7x - 15 = 3x + 5
7x - 3x = 5 + 15
4x = 20
x = 20 / 4
x = 5