num 236

(1.7 - 1.45 + 0.1)/0.5/((0.38 + 1/10 - 0.355)·5) +

+(19/25 - 0.62)·2=

=(17/10 - 29/20 + 1/10)/0.5/((19/50 + 1/10 - 71/200)·5) +

+(19/25 - 31/50)·2 =

=7/20/(1/2)/(1/8·5) +

+(19/25 - 31/50)·2 =

=7/10/(5/8) + 7/50·2=

=28/25 + 7/50·2= 28/25 + 7/25= 7/5

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$\small \dfrac{(1,7-1,45+0,1) : 0,5}{\left(0,38+\dfrac{1}{10}-0,355\right)·5}+\left(\dfrac{19}{25}-0,62\right)·2 =$

$\small =\dfrac{\left(\dfrac{17}{10}-\dfrac{145}{100}+\dfrac{1}{10}\right) : \dfrac{5}{10}}{\left(\dfrac{38}{100}+\dfrac{1}{10}-\dfrac{355}{1000}\right)·5}+\left(\dfrac{19}{25}-\dfrac{62}{100}\right)·2 =$

$\small =\dfrac{\left(\dfrac{17}{10}-\dfrac{\cancel{145}^{29}}{\cancel{100}_{20}}+\dfrac{1}{10}\right) : \dfrac{\cancel5^1}{\cancel{10}_2}}{\left(\dfrac{\cancel{38}^{19}}{\cancel{100}_{50}}+\dfrac{1}{10}-\dfrac{\cancel{355}^{71}}{\cancel{1000}_{200}}\right)·5}+\left(\dfrac{19}{25}-\dfrac{\cancel{62}^{31}}{\cancel{100}_{50}}\right)·2 =$

$\small =\dfrac{\left(\dfrac{17}{10}-\dfrac{29}{20}+\dfrac{1}{10}\right) : \dfrac{1}{2}}{\left(\dfrac{19}{50}+\dfrac{1}{10}-\dfrac{71}{200}\right)·5}+\left(\dfrac{19}{25}-\dfrac{31}{50}\right)·2 =$

$\small =\dfrac{\left(\dfrac{34-29+2}{20}\right)·2}{\left(\dfrac{76+20-71}{200}\right)·5}+\left(\dfrac{38-31}{50}\right)·2 =$

$\small =\dfrac{\dfrac{7}{\cancel{20}_{10}}·\cancel2^1}{\dfrac{\cancel{25}^1}{\cancel{200}_8}·5}+\dfrac{7}{\cancel{50}_{25}}·\cancel2^1 =$

$\small =\dfrac{\dfrac{7}{10}}{\dfrac{1}{8}·5}+\dfrac{7}{25} =$

$\small =\dfrac{\dfrac{7}{10}}{\dfrac{5}{8}}+\dfrac{7}{25} =$

$\small =\dfrac{7}{\cancel{10}_5}·\dfrac{\cancel8^4}{5}+\dfrac{7}{25} =$

$\small =\dfrac{7}{5}·\dfrac{4}{5}+\dfrac{7}{25} =$

$\small =\dfrac{28}{25}+\dfrac{7}{25} =$

$\small =\dfrac{\cancel{35}^7}{\cancel{25}_5} = \dfrac{7}{5}$