Question

solve and verify................

Answer 1

$\underline{\large{\bf{\mathfrak{Hallo!}}$

$= > \frac{3x - 1}{5} - \frac{x}{7} = 3 \\ \\ = > \frac{7(3x - 1) - 5x}{35} = 3 \\ \\ = > \frac{21x - 7 - 5x}{35} = 3 \\ \\ = > 16x - 7 = 105 \\ \\ = > 16x = 112 \\ \\ = > x = \frac{112}{16} = 7$

Verification:-
$= > \frac{3(7) - 1}{5} - \frac{7}{7} = 3 \\ \\ = > \frac{21 - 1}{5} - 1 = 3 \\ \\ = > \frac{20}{5} - 1 = 3 \\ \\ = > 4 - 1 = 3 \\ \\ = > 3 = 3$

$\bf{\mathfrak{Hope \: this \: helps...:)}}$

Answer 2

3x-1/5 -x/7=3 = the LCM of 5&7 is 35 =
21x-7 - 5x/35=3 = 16x-7=105=16x=112=x=112/16 =x=7