[tex] \frac{3x}{7} - 2 = 15[/tex]
[tex] \frac{3x}{7} = 15 + 2[/tex]
[tex] \frac{3x}{7} = 17[/tex]
[tex]3x = 17 \times 7[/tex]
[tex]3x = 119[/tex]
[tex]x = \frac{119}{3} [/tex]
[tex]∴ \: x = \frac{119}{3} [/tex]