Berenice101
Berenice101
24-08-2016
Mathematics
contestada
-7 - 7 ( 8x - 7 ) = - 19 + 5x
Respuesta :
hai0612
hai0612
24-08-2016
-7 - 7( 8x - 7 ) = -19 + 5x
⇔ -56x + 49 = -12 + 5x
⇔ -61x = -61
⇔ x = 1
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convert to exponential equation log9 1/81= 2
