a) [tex] \frac{2}{3} x- \frac{1}{5} = \frac{3}{10} [/tex]
[tex]2*10 x- 6 = 3[/tex]
[tex]20 x= 3+6[/tex]
[tex]x= \frac{9}{20} [/tex]
b) [tex] \frac{x}{2} - \frac{4x}{3} + \frac{7x}{6} =7[/tex]
[tex]3x - 4*2x + 7x =42[/tex]
[tex]3x - 8x + 7x =42[/tex]
[tex]2x =42[/tex]
[tex]x= \frac{42}{2} =21[/tex]
