Question

Помогите 3 номера пожалуйста побыстрее.

Answer 1

$\frac{4 \times 5}{7 \times 4} = \frac{5}{7} \\ \frac{6 \times 2}{11 \times 2} = \frac{6}{11} \\ \frac{9 \times 5}{18 \times 9} = \frac{5}{18} \\ \frac{8 \times 15}{17 \times 15} = \frac{8}{17} \\ \frac{21 \times 10}{23 \times 10} = \frac{21}{23}$

$\frac{3}{6} = \frac{3 \div 3}{6 \div 3} = \frac{1}{2} \\ \frac{6}{12} = \frac{6 \div 3}{12 \div 3} = \frac{2}{4} \\ \frac{12}{15} = \frac{12 \div 3}{15 \div 3} = \frac{4}{5} \\ \frac{15}{18} = \frac{15 \div 3}{18 \div 3} = \frac{5}{6} \\ \frac{18}{21} = \frac{18 \div 3}{21 \div 3} = \frac{6}{7} \\ \frac{12}{24} = \frac{12 \div 3}{24 \div 3} = \frac{4}{8} \\ \frac{45}{60} = \frac{45 \div 3}{60 \div 3} = \frac{15}{20} \\ \frac{63}{96} = \frac{63 \div 3}{96 \div 3} = \frac{21}{32} \\ \frac{105}{120} = \frac{105 \div 3}{120 \div 3} = \frac{35}{40}$

$\frac{15}{20} = \frac{15 \div 5}{20 \div 5} = \frac{3}{4} \\ \frac{24}{40} = \frac{24 \div 8}{40 \div 8} = \frac{3}{5} \\ \frac{25}{50} = \frac{25 \div 25}{50 \div 25} = \frac{1}{2} \\ \frac{45}{75} = \frac{45 \div 15}{75 \div 15} = \frac{3}{5} \\ \frac{80}{100} = \frac{80 \div 20}{100 \div 20} = \frac{4}{5} \\ \frac{48}{120} = \frac{48 \div 24}{120 \div 24} = \frac{2}{5} \\ \frac{100}{120} = \frac{100 \div 20}{120 \div 20} = \frac{5}{6} \\ \frac{100}{150} = \frac{100 \div 50}{150 \div 50} = \frac{2}{3} \\ \frac{84}{210} = \frac{84 \div 42}{210 \div 42} = \frac{2}{5} \\ \frac{152}{180} = \frac{152 \div 4}{180 \div 4} = \frac{38}{45}$