Выполните 472 473пожалуйста

Question 1

Выполните 472 473
пожалуйста

Question 2

472) а) $\frac{9}{10} * \frac{5}{6} = \frac{9*5}{10*6} = \frac{3}{4}$

б) $\frac{6}{25}* \frac{20}{21} = \frac{6*20}{25*21} = \frac{2*4}{5*7} = \frac{8}{35}$

в) $\frac{17}{30}* \frac{26}{51} = \frac{17*26}{30*51} = \frac{13}{15*3} = \frac{13}{45}$

г) $\frac{40}{7}* \frac{14}{5} = \frac{40*14}{7*5} = 2*8 = 16$

д) $\frac{57}{37}*\frac{74}{86} = \frac{57*74}{37*86} = \frac{57}{43} = 1 \frac{14}{43}$

е) $\frac{81}{115} * \frac{46}{81} = \frac{81*46}{115*81} = \frac{46}{115}$

ж) $\frac{3}{16} * 4 = \frac{3*4}{16} = \frac{3}{4}$

з) $23* \frac{5}{46} = \frac{23*5}{46} = \frac{5}{2} = 2 \frac{1}{2}$

и) $\frac{5}{13} * 39 = \frac{5*39}{13} = 15$

к) $5*2 \frac{1}{5} = \frac{5*11}{5} = 11$

л) $3 \frac{3}{5} * 1 \frac{1}{9} = \frac{18*10}{5*9} = 2*2 = 4$

м) $4 \frac{2}{7} * 2 = \frac{30*2}{7} = \frac{60}{7} = 8 \frac{4}{7}$

н) $2 \frac{4}{15} * 6 \frac{6}{11} = \frac{34}{15} * \frac{72}{6} = \frac{34*72}{15*6}= \frac{34*4}{5} = \frac{136}{5} = 27 \frac{1}{5}$

о) $2 \frac{2}{25} * 1\frac{9}{16} = \frac{52*25}{25*16} = \frac{13}{4} = 3\frac{1}{4}$

п) $\frac{13}{43} * 8 \frac{7}{26} = \frac{13*215}{43*26} = \frac{215}{86} = 3 \frac{43}{86} = 3 \frac{1}{2}$

473)
$\frac{2}{5}m = \frac{2*1}{5*2} = \frac{1}{5}$

$\frac{2}{5}m = \frac{2*2}{5*5} = \frac{4}{25}$

$\frac{2}{5}m = \frac{2*5}{5*2} = 1$

$\frac{2}{5}m = \frac{2*15}{5*8} = \frac{3}{4}$

$\frac{2}{5}m = \frac{2*15}{5*16} = \frac{3}{8}$

$\frac{4}{9}x = \frac{4*1}{9*4} = \frac{1}{9}$

$\frac{4}{9}x = \frac{4*4}{9*9} = \frac{16}{81}$

$\frac{4}{9}x = \frac{4*9}{9*2} = 2$