Упр.840 ГДЗ Муравин 6 класс (Математика)

1) 5/45; 4/32; 9/81; 8/56; 7/63; 6/54;
2) 12/54; 25/40; 36/60; 14/42; 13/52; 17/85;
3) 76/114; 112/126; 75/105; 37/222; 98/168;
4) 515/927; 345/483; 246/1476; 1110/1332; 1425/2736.

Сократим дроби, разделив числитель и знаменатель на их общий делитель.

1)

$$ \frac{5}{45}=\frac{1}{9},\quad \frac{4}{32}=\frac{1}{8},\quad \frac{9}{81}=\frac{1}{9},\quad \frac{8}{56}=\frac{1}{7},\quad \frac{7}{63}=\frac{1}{9},\quad \frac{6}{54}=\frac{1}{9} $$

2)

$$ \frac{12}{54}=\frac{2}{9},\quad \frac{25}{40}=\frac{5}{8},\quad \frac{36}{60}=\frac{3}{5},\quad \frac{14}{42}=\frac{1}{3},\quad \frac{13}{52}=\frac{1}{4},\quad \frac{17}{85}=\frac{1}{5} $$

3)

$$ \frac{76}{114}=\frac{2}{3},\quad \frac{112}{126}=\frac{8}{9},\quad \frac{75}{105}=\frac{5}{7},\quad \frac{37}{222}=\frac{1}{6},\quad \frac{98}{168}=\frac{7}{12} $$

4)

$$ \frac{515}{927}=\frac{5}{9},\quad \frac{345}{483}=\frac{5}{7},\quad \frac{246}{1476}=\frac{1}{6},\quad \frac{1110}{1332}=\frac{5}{6},\quad \frac{1425}{2736}=\frac{25}{48} $$

Ответ

1) $$\frac{1}{9},\ \frac{1}{8},\ \frac{1}{9},\ \frac{1}{7},\ \frac{1}{9},\ \frac{1}{9}$$
2) $$\frac{2}{9},\ \frac{5}{8},\ \frac{3}{5},\ \frac{1}{3},\ \frac{1}{4},\ \frac{1}{5}$$
3) $$\frac{2}{3},\ \frac{8}{9},\ \frac{5}{7},\ \frac{1}{6},\ \frac{7}{12}$$
4) $$\frac{5}{9},\ \frac{5}{7},\ \frac{1}{6},\ \frac{5}{6},\ \frac{25}{48}$$