Question

решите срочно остался один день!!!!!!!!!!!!!!!!!!!

Answer 1

▪1)


$9 frac{1}{5} - (5x - 4 frac{1}{2} ) div 11 frac{1}{4} = 8 frac{14}{15} \ - (5x - 4 frac{1}{2} ) div 11 frac{1}{4} =8 frac{14}{15} - 9 frac{1}{5} \ - (5x - 4 frac{1}{2} ) div frac{45}{4} = - frac{4}{15} \ - (5x - 4 frac{1}{2} ) = - frac{4}{15} times frac{45}{4} \ - 5x = - 3 - 4 frac{1}{2} \ - 5x = - 7 frac{1}{2} \ x = - frac{15}{2} div ( - 5) = frac{15}{2 times 5} = frac{3}{2} \ x = 1 frac{1}{2} = 1.5$

▪2)

$frac{5}{12} y + 3 frac{2}{9} + 1 frac{7}{8} y = 5 frac{1}{18} \ 1frac{5 times 2 + 7 times 3}{24} y = 5 frac{1}{18} - 3 frac{2}{9} \ 1 frac{31}{24} y = 2 frac{1 - 4}{18} \ 2 frac{7}{24} y = 2 - frac{3}{18} \ frac{55}{24} y = 2 - frac{1}{6} \ y = 1 frac{5}{6} div frac{55}{24} = frac{11 times 24}{6 times 55} = frac{4}{5} \ y = 0.8$