[tex]1. \: 13x - 2 = 13 \\ answer: \: x = \frac{15}{13} [/tex]
[tex]2. \: \: 13x1 = 10 \\ answer : \: x = \frac{10}{13} [/tex]
[tex]3. \: \: 1x1 = 8 \: \\ answer : \: \: x = 8[/tex]
correct me if I'm wrong:)