-(x-49) = + 3x + 13 )
- x +49 = 3x + 13
49 - 13 = 3x + x
36 = 4x
9 = x
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Respuesta
9=x
Explicación paso a paso:
-(x-49) = + 3x + 13 )
- x +49 = 3x + 13
49 - 13 = 3x + x
36 = 4x
9 = x