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Answer:
[tex]x=-1[/tex]
Step-by-step explanation:
The equation they are giving is:
[tex]\frac{4x-17}{7} =3x[/tex]
Multiply both sides by 7 to get:
[tex]4x-17=21x[/tex]
Subtract 4x from both sides to reach:
[tex]-17=17x[/tex]
Therefore, [tex]x=-1[/tex].
Hope this helps :)