[tex]3t + \frac{1}{15} = \frac{4}{5} \\ 3t = \frac{11}{15} > > > t = \frac{11}{45} [/tex]
[tex]8u = \frac{1}{5} \\ u = \frac{1}{40} [/tex]
[tex]b = \frac{4}{7} + \frac{25}{28} \\ b = \frac{41}{28} [/tex]
[tex]q = \frac{30}{14} [/tex]
[tex] \frac{1}{2} t = - \frac{33}{22} \\ t = - 3[/tex]
