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МатематикаВопрос:
75 ÷ = 6.6 31 6 ÷ = 2 3 ÷1층= ÷ 2 14 4 -= = 22 1÷ 2 3 148 = = 2 1+1= 1.4 3 89 4.1 8 =÷ 3 ÷1 1 2 ÷1 = 3 214 = = 2 2 1 1 = 1 = 7 4 6 1 2.2 8+2= =÷ 1 6 1 4 3÷ = 1 = 1 1 2 1 8 ÷1 =
Ответ:
Давай решим эти примеры на деление дробей.
\(\frac{7}{9} \div \frac{5}{9} = \frac{7}{9} \times \frac{9}{5} = \frac{7 \times 9}{9 \times 5} = \frac{7}{5} = 1\frac{2}{5}\)
\(\frac{2}{6} \div 1\frac{1}{6} = \frac{2}{6} \div \frac{7}{6} = \frac{2}{6} \times \frac{6}{7} = \frac{2 \times 6}{6 \times 7} = \frac{2}{7}\)
\(\frac{3}{9} \div \frac{1}{6} = \frac{3}{9} \times \frac{6}{1} = \frac{3 \times 6}{9 \times 1} = \frac{18}{9} = 2\)
\(\frac{3}{6} \div 1\frac{2}{4} = \frac{3}{6} \div \frac{6}{4} = \frac{3}{6} \times \frac{4}{6} = \frac{3 \times 4}{6 \times 6} = \frac{12}{36} = \frac{1}{3}\)
\(1\frac{2}{5} \div \frac{2}{7} = \frac{7}{5} \div \frac{2}{7} = \frac{7}{5} \times \frac{7}{2} = \frac{7 \times 7}{5 \times 2} = \frac{49}{10} = 4\frac{9}{10}\)
\(\frac{3}{6} \div \frac{4}{8} = \frac{3}{6} \times \frac{8}{4} = \frac{3 \times 8}{6 \times 4} = \frac{24}{24} = 1\)
\(1\frac{2}{4} \div \frac{3}{8} = \frac{6}{4} \div \frac{3}{8} = \frac{6}{4} \times \frac{8}{3} = \frac{6 \times 8}{4 \times 3} = \frac{48}{12} = 4\)
\(\frac{4}{8} \div \frac{1}{9} = \frac{4}{8} \times \frac{9}{1} = \frac{4 \times 9}{8 \times 1} = \frac{36}{8} = \frac{9}{2} = 4\frac{1}{2}\)
\(1\frac{1}{4} \div 1\frac{2}{3} = \frac{5}{4} \div \frac{5}{3} = \frac{5}{4} \times \frac{3}{5} = \frac{5 \times 3}{4 \times 5} = \frac{3}{4}\)
\(\frac{3}{9} \div 1\frac{1}{6} = \frac{3}{9} \div \frac{7}{6} = \frac{3}{9} \times \frac{6}{7} = \frac{3 \times 6}{9 \times 7} = \frac{18}{63} = \frac{2}{7}\)
\(\frac{1}{3} \div \frac{4}{6} = \frac{1}{3} \times \frac{6}{4} = \frac{1 \times 6}{3 \times 4} = \frac{6}{12} = \frac{1}{2}\)
\(\frac{2}{3} \div 1\frac{2}{4} = \frac{2}{3} \div \frac{6}{4} = \frac{2}{3} \times \frac{4}{6} = \frac{2 \times 4}{3 \times 6} = \frac{8}{18} = \frac{4}{9}\)
\(\frac{2}{3} \div \frac{2}{7} = \frac{2}{3} \times \frac{7}{2} = \frac{2 \times 7}{3 \times 2} = \frac{14}{6} = \frac{7}{3} = 2\frac{1}{3}\)
\(\frac{1}{9} \div 1\frac{1}{4} = \frac{1}{9} \div \frac{5}{4} = \frac{1}{9} \times \frac{4}{5} = \frac{1 \times 4}{9 \times 5} = \frac{4}{45}\)
\(\frac{6}{8} \div \frac{1}{2} = \frac{6}{8} \times \frac{2}{1} = \frac{6 \times 2}{8 \times 1} = \frac{12}{8} = \frac{3}{2} = 1\frac{1}{2}\)
\(\frac{2}{6} \div \frac{2}{5} = \frac{2}{6} \times \frac{5}{2} = \frac{2 \times 5}{6 \times 2} = \frac{10}{12} = \frac{5}{6}\)
\(1\frac{1}{3} \div \frac{6}{9} = \frac{4}{3} \div \frac{6}{9} = \frac{4}{3} \times \frac{9}{6} = \frac{4 \times 9}{3 \times 6} = \frac{36}{18} = 2\)
\(3\frac{1}{2} \div \frac{4}{5} = \frac{7}{2} \div \frac{4}{5} = \frac{7}{2} \times \frac{5}{4} = \frac{7 \times 5}{2 \times 4} = \frac{35}{8} = 4\frac{3}{8}\)
\(\frac{1}{8} \div 1\frac{2}{5} = \frac{1}{8} \div \frac{7}{5} = \frac{1}{8} \times \frac{5}{7} = \frac{1 \times 5}{8 \times 7} = \frac{5}{56}\)
\(1\frac{1}{5} \div 1\frac{1}{4} = \frac{6}{5} \div \frac{5}{4} = \frac{6}{5} \times \frac{4}{5} = \frac{6 \times 4}{5 \times 5} = \frac{24}{25}\)
Ответ: Все примеры решены выше.
