вычислите (7 1/3 + 2 1/4) / 1/4 - 30 5/6

[tex](7 \frac{4}{12} +2 \frac{3}{12} )*4-30 \frac{10}{12} =9 \frac{7}{12} *4-30 \frac{10}{12} =36\frac{28}{12} -30 \frac{10}{12} =6 \frac{18}{12} =7 \frac{6}{12}= [/tex]7.5