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-14/5a + 8 = 6/5a-4
8+4= 6/5a + 14/5a
12 = 20/5a
12=4a
3= a
Comprobación
-14/5(3)+8=1/5(6(3)-20)
-42/5+8=1/5(18-20)
((-42+32)/4)=1/5(-2)
-10/4=-2/5
-2/5=-2/5