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6x - 8 = 4 (-2x + 5)
6x - 8 = -8x + 20
6x + 8x = 20 + 8
14x = 28
x = 28 ÷ 14
x = 2 → respuesta
6x-8 = -8x+20
6x+8x=20+8
14x = 28
x= 28/14
x = 2
el numero buscado es 2