5/4+7/6:2/3 Вычислите

1)[latex] \frac{7}{6} * \frac{3}{2} = \frac{21}{12} [/latex] 2)[latex] \frac{5}{4} + \frac{21}{12} = \frac{5*3}{12} + \frac{21}{12} = \frac{15}{12} + \frac{21}{12} = \frac{36}{12} =3[/latex]

. 7×3 =5/4+------- =5/4+21/12=36/12 .6×2 или 36/12 это будет 3