5 целых 4\7 : 1 целую 5\21- (5 целых 2\15 * 3\22+ 1 целую 14\15

[latex]5 \frac{4}{7} : 1 \frac{5}{21} - (5 \frac{2}{15} * \frac{3}{22} + 1 \frac{14}{15})[/latex] = [latex]1 \frac{13}{15} [/latex] 1) [latex]5 \frac{2}{15} * \frac{3}{22}[/latex] = [latex] \frac{77*3}{15*22}[/latex] = [latex]\frac{7*1}{5*2} [/latex] = [latex] \frac{7}{10} [/latex] 2) [latex]\frac{7}{10} + 1 \frac{14}{15}[/latex] = [latex]\frac{21}{30} + \frac{58}{30} [/latex] = [latex] \frac{79}{30} [/latex] 3) [latex]5 \frac{4}{7} : 1 \frac{5}{21}[/latex] = [latex]\frac{39*21}{7*26} [/latex] = [latex]\frac{3*3}{1*2}[/latex] = [latex] \frac{9}{2} [/latex] 4) [latex]\frac{9}{2} - \frac{79}{30}[/latex] = [latex]\frac{135}{30} - \frac{79}{30}[/latex] = [latex] \frac{56}{30} [/latex] = [latex] \frac{28}{15} [/latex] = [latex]1 \frac{13}{15} [/latex]