6 per 9 : 7 per 12 x 2 per 3 - 1 per 4

[tex] \frac{6}{9} \div \frac{7}{12} \times \frac{2}{3} - \frac{1}{4} [/tex]
yg bagi dikali terbalik

[tex] \frac{6}{9} \times \frac{12}{7} \times \frac{2}{3} - \frac{1}{4} \\ \\ \frac{6}{9} \times \frac{12}{7} \times \frac{2}{3} = \frac{144}{189} \\ = \frac{144}{189} - \frac{1}{4} \\ = \frac{144}{189} \div 9 = \frac{16}{21} - \frac{1}{4} \\ = \frac{16 \times 4}{21 \times 4} - \frac{1 \times 21}{4 \times 21} \\ = \frac{64}{84} - \frac{21}{84} \\ = \frac{64 - 21}{84} \\ = \frac{43}{84} [/tex]


semoga terbantu