Giải thích các bước giải:
$a) (85,05:27+850,5)×43-150,97 $
$=(3,15+850,5)×43-150,97$
$=853,65×43-150,97$
$=36706,95-150,97$
$=36555,98$
$b) 0,51:0,17+0,57:1,9+4,8:0,16+0,75:0,9$
$=\frac{51}{100}:\frac{17}{100}+\frac{57}{100}:\frac{19}{10}+\frac{24}{5}:\frac{4}{25}+\frac{18}{25}:\frac{9}{10}$
$=\frac{51}{100}×\frac{100}{17}+\frac{57}{100}×\frac{10}{19}+\frac{24}{5}×\frac{25}{4}+\frac{18}{25}×\frac{10}{9}$
$=\frac{5100}{1700}+\frac{570}{1900}+\frac{600}{20}+\frac{180}{225}$
$=3+\frac{3}{10}+30+\frac{4}{5}$
$=3+0,3+30+0,8$
$=34,1$
Học tốt!!!