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Segundo pasamos los valores conocidos al segundo miembro utilizando la ley de los signos. 12+1/3+8.
1/2x-3x sacamos el mcm = 2⇒ x - 6x 12/1+1/3 +8/1 mcm = 3⇒ 36+1+24 = 63/3 ------------ --------------
2 3
x-6x = 61
-------- ---- = 3( x-6x ) = 2( 61) = 3x-18x = 122 ⇒ -15x = 122
2 3
x = 122/ -15
x= - 8,13
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