Salutare!
[tex]\bf 1-3\cdot (8x-4)=1[/tex]
[tex]\bf 1-24x+12 =1[/tex]
[tex]\bf 13-24x =1[/tex]
[tex]\bf 13 =1+24x[/tex]
[tex]\bf 13 -1 = 24x[/tex]
[tex]\bf 12= 24x\:\:\Big|:12[/tex]
[tex]\bf 12x = 1[/tex]
[tex]\boxed{\bf x = \dfrac{1}{2} \notin N}[/tex]
==pav38==
