[tex]
c. \: \: \: \frac{1}{2} \times 1 \frac{1}{3} + \frac{2}{9} \div \frac{10}{6} = \\ \\ \frac{1}{2} \times 1 \frac{1}{3} = \frac{1}{2} \times \frac{4}{3} = \frac{1 \times 4}{2 \times 3} = \frac{4 \div 2}{6 \div 2} = \frac{2}{3} \\ \\ \frac{2}{9} \div \frac{10}{6} = \frac{2 \times 6}{9 \times 10} = \frac{12 \div 6}{90 \div 6} = \frac{2}{15} \\ \\ \frac{2}{3} + \frac{2}{15} = \frac{2 \times 15}{3 \times 15} + \frac{2 \times 3}{15 \times 3} = \frac{30}{45} + \frac{6}{45} = \frac{30 + 6}{45} = \frac{36 \div 9}{45 \div 9} = \frac{4}{5} \\ \\ \\ d. \: \: \: 1 \frac{2}{3} \div 2 \frac{1}{2} - \frac{3}{5} \times 1 \frac{2}{7} = \\ \\
1 \frac{2}{3} \div 2 \frac{1}{2} = \frac{5}{3} \div \frac{5}{2} = \frac{5 \times 2}{3 \times 5} = \frac{10 \div 5}{15 \div 5} = \frac{2}{3} \\ \\ \frac{3}{5} \times1 \frac{2}{7} = \frac{3 \times 9}{5 \times 7} = \frac{27}{35} \\ \\ \frac{2}{3} - \frac{27}{35} = \frac{35 \times 2 - 3 \times 27}{105} = - \frac{11}{105}
[/tex]
MAAF KALO
SALAH .
[answer.2.content]
