[tex]63a)\\\\3*\frac{4}{9}*12=\frac{12}{\not{9}^3}*\not{12}^4=\frac{48}{3}=16\\\\b)\\\\\not{9}^3*\frac{17}{\not{12}^4}*6=\frac{51}{\not{4}^2}*\not{6}^3=\frac{153}{2}=76\frac{1}{2}\\\\c)\\\\4\frac{5}{6}*9*2=\frac{29}{\not{6}^1}*\not{18}^3=87[/tex]
[tex]d)\\\\ 9*(10\frac{11}{18}-3\frac{5}{6})= 9*(10\frac{11}{18}-3\frac{15}{18})=9*(9\frac{29}{18}-3\frac{15}{18})=9*6\frac{14}{18}=\\\\=\not{9}^1*\frac{122}{\not{18}^2}=\frac{122}{2}=61\\\\e)\\\\3*(1\frac{3}{4}+2\frac{5}{6})=3*(1\frac{9}{12}+2\frac{10}{12})=3*3\frac{19}{12}=\not{3}^1*\frac{55}{\not{12}^4}=\frac{55}{4}=13\frac{3}{4}\\\\f)\\\\4*(2\frac{1}{4}-1\frac{3}{5})=4*(2\frac{5}{20}-1\frac{12}{20})=4*(1\frac{25}{20}-1\frac{12}{20})=\not{4}^1*\frac{13}{\not{20}^5}=\frac{13}{5}=2\frac{3}{5}[/tex]
