2÷1/2×(21целое88/95+29целых37/38-1целое9/10-48целых5/16)×1целое1/9

По действиям если, то: [latex]2: \frac{1}{2} (21 \frac{88}{95}+29 \frac{37}{38}-1 \frac{9}{10}-48 \frac{5}{16} )*1 \frac{1}{9}= [/latex][latex]11,5 [/latex] 1→[latex]21 \frac{88}{95}+29 \frac{37}{38}= \frac{2083}{95} + \frac{1139}{38}= \frac{4166}{190} + \frac{5695}{190}= \frac{9861}{190}=51,9 [/latex] 2→[latex]51,9-1 \frac{9}{10}=51 \frac{9}{10}-1 \frac{9}{10}=50 \frac{9}{10}=50,9 [/latex] 3→[latex]50 \frac{9}{10}-48 \frac{5}{16}= \frac{509}{10} - \frac{773}{16}= \frac{4072}{80} - \frac{3865}{80}= \frac{207}{80} [/latex] 4→[latex]2: \frac{1}{2}=2* \frac{2}{1} =4[/latex] 5→[latex]4* \frac{207}{80}= \frac{4*207}{80}= \frac{207}{20} [/latex] 6→[latex] \frac{207}{20}*1 \frac{1}{9}= \frac{207}{20}* \frac{10}{9}= \frac{207*10}{20*9}= \frac{23}{2}=11 \frac{1}{2}=11,5 [/latex]