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/a/ = b ⇔ a = b v a = - b
/3 + 2x/ = 3x - 8
3 + 2x = 3x - 8 v 3 + 2x = - (3x - 8)
3 + 8 = 3x - 2x v 3 + 2x = - 3x + 8
11 = x v 2x + 3x = 8 - 3
x = 11 v 5x = 5
v x = 5/5
v x = 1
Solución.
(11 , 1)