Question

15/20 ∶5/15= -15/(20 )* 5/15=(15*5)/(20*15)=(сокращаем)=-1/4 1)11/120 ∶(-121/12)=?
2)-250/400 ∶(-25/20)=?
3)11/12,2 ∶11/2=?
4)6/81:3/9=?
5)555/444:4/5=?​

Answer 1

Пошаговое объяснение:$\frac{15}{20} : \frac{5}{15} = \frac{15*15}{20*5} = \frac{3*3}{4} = \frac{9}{4} =2 \frac{1}{4}$ =2,25

$\frac{11}{120} : -\frac{121}{12} =- \frac{11*12}{120*121} =- \frac{1}{110}$

$-\frac{250}{400} : -\frac{25}{20} = \frac{250*20}{400*25} = \frac{10}{20} = \frac{1}{2}$ = 0,5

$\frac{11}{12,2} : \frac{11}{2} = \frac{11*2}{12,2*11} = \frac{1}{6,1}$

$\frac{6}{81} : \frac{3}{9} = \frac{6*9}{81*3} = \frac{2}{9}$

$\frac{555}{444} : \frac{4}{5} = \frac{555*5}{444*4} = \frac{25}{16} = 1\frac{9}{16}$