Answer :

[tex] |5 - 4x| - 3 = 4 \\ |5-4x|=7\\ 5-4x=7 \vee 5-4x=-7\\-4x=2 \vee -4x=-12\\ x=-\dfrac{2}{4} \vee v=3\\ x=-\dfrac{1}{2} \vee v=3\\[/tex]

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