(3 5/18 - 7 1/12 + 2 5/9):1.9-1.5 Just help me,мозги не варят помогите

$=( \frac{59}{18} - \frac{85}{12}+ \frac{23}{9}):1.9-1.5=( \frac{118}{36} - \frac{255}{36} + \frac{92}{36}):1.9-1.5=( -\frac{4[tex] \frac{15}{10}= \frac{45*10}{36*19} - \frac{15}{10} = \frac{5*10}{4*19} - \frac{3}{2}= \frac{5*5}{2*19}- \frac{3}{2} = \frac{25-57}{38} = - \frac{32}{38}=- \frac{16}{19}$ 5}{36}): \frac{19}{10} [/tex]
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