[tex]\displaystyle\bf\\ \frac{\overline{ab30}+35\cdot\overline{ab}}{15}=\\\\=\frac{100\cdot\overline{ab}+30+35\cdot\overline{ab}}{15}=\\\\=\frac{\overline{ab}(100+35)+30}{15}=\\\\=\frac{135\cdot\overline{ab}+30}{15}=\\\\=\frac{15\cdot9\cdot\overline{ab}+15\cdot2}{15}=\boxed{\bf9\cdot\overline{ab}+2}\\\\\text{\bf Raspuns corect: ~a)}[/tex]
