Question

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

Answer 1

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