(5\12+13\20)² *1 13\23 Прошу помогите.

[latex] 1)\frac{5}{12} + \frac{13}{20} = \frac{25+39}{60} = \frac{64}{60} = \frac{16}{15} \\ 2) \frac{16}{15} * \frac{16}{15} = \frac{256}{225} \\ 3) \frac{256}{225} *1 \frac{13}{23} = \frac{256}{225} * \frac{36}{23}= \frac{256}{25} * \frac{4}{23} = \frac{1024}{575} =1 \frac{449}{575} [/latex]