Question

Пожалуйста помогите мне очень нужно пожалуйста помогите я буду очень благодарна

Answer 1

Ответ:

Вариант 1

$1. \frac{10}{15} =\frac{10:5}{15:5}=\frac{2}{3} \\\\\frac{12}{18} =\frac{12:6}{18:6} =\frac{2}{3} \\\\\frac{24}{48} =\frac{24:24}{48:24} =\frac{1}{2} \\\\\frac{28}{35} =\frac{28:7}{35:7} =\frac{4}{5} \\\\\frac{35}{42} =\frac{35:7}{42:7} =\frac{5}{6} \\\\\frac{13}{78} =\frac{13:13}{78:13} =\frac{1}{6}\\ \\\frac{7}{14} =\frac{7:7}{14:7} =\frac{1}{2} \\\\\frac{75}{100} =\frac{75:25}{100:25}=\frac{3}{4}$

$2.\frac{4*5}{15*6} =\frac{2*1}{3*3} =\frac{2}{6} =\frac{1}{3} \\\\\frac{12*14}{49*15} =\frac{4*2}{7*5} =\frac{8}{35} \\\\\frac{8*11}{33*4} =\frac{2*1}{3*1} =\frac{2}{3} \\\\\frac{2*9*12}{6*8*3} = \frac{1*3*2}{1*4*1} =\frac{6}{4} =1\frac{2}{4} =1\frac{1}{2}$

Вариант 2

$1. \frac{14}{21} =\frac{14:7}{21:7} =\frac{2}{3} \\\\\frac{6}{9} = \frac{6:3}{9:3} =\frac{2}{3} \\\\\frac{88}{99} = \frac{88:11}{99:11} =\frac{8}{9} \\\\\frac{70}{84} =\frac{70:7}{84:7} = \frac{10:2}{12:2} =\frac{5}{6} \\\\\frac{8}{12} = \frac{8:4}{12:4} =\frac{2}{3} \\\\\frac{39}{91} =\frac{39:13}{91:13}=\frac{3}{7} \\\\\frac{70}{112} =\frac{70:14}{112:14}=\frac{5}{8} \\\\\frac{18}{24} =\frac{18:6}{24:6} =\frac{3}{4}$

$2. \frac{9*14}{28*3} =\frac{3*1}{2*1} =\frac{3}{2} =1\frac{1}{2} \\\\\frac{44*36}{27*55} = \frac{4*4}{3*5} =\frac{16}{15} =1\frac{1}{15} \\\\\frac{6*25}{35*8} =\frac{3*5}{7*4} =\frac{15}{28} \\\\\frac{6*7*7*5}{49*15} =\frac{6*1*1*1}{1*3} =\frac{6}{3} =2$