[latex]-12 / (-2 \frac{1}{13} ) + 1\frac{1}{4} / ( - \frac{15}{46} )[/latex] Дайте пожалуйста ответ

[latex] \frac{-12}{-2 \frac{2}{3} } + \frac{1 \frac{1}{4} }{- \frac{15}{46} } =12: \frac{8}{3} + \frac{5}{4} : (- \frac{15}{46} ) = \\ \\ = \frac{12*3}{1*8} - \frac{5*46}{4*15} = \frac{3*3}{1*2} - \frac{1*23}{2*3} = \\ \\ = \frac{9}{2} - \frac{23}{6} = \frac{27}{6} - \frac{23}{6} = \frac{4}{6} = \frac{2}{3} [/latex]