[tex] \dfrac{2}{7}y - \dfrac{5}{7}y = \dfrac{3}{7}y + 1[/tex]
[tex] -\dfrac{3}{7}y = \dfrac{3}{7}y + 1[/tex]
[tex] -\dfrac{3}{7}y - \dfrac{3}{7}y = 1[/tex]
[tex] -\dfrac{6}{7}y = 1[/tex]
[tex]-\dfrac{6}{7}y \times \bigg( -\dfrac{7}{6} \bigg) = 1 \times \bigg( -\dfrac{7}{6} \bigg) [/tex]
[tex]y = -\dfrac{7}{6} [/tex]
