Question

calculati : 9/4 x 16/18 : 2 1/6 b) (4/5)^13:[(4/5)^2]^6

Answer 1

9/4 * 16/18 :21/6 =9/4 * 4/9 : 7/6 = 36/36 : 4/9 = 1:4/9 = 9/4

(4/5)^13: [(4/5)^2]^6= (4/5)13 : (4/5)^12 = (4/5)^13-12=4/5

Answer 2

[tex]\frac{9}{4}\cdot\frac{16}{18}:\frac{21}{6}=\frac{144}{72}\cdot\frac{2}{7}=2\cdot\frac{2}{7}=\frac{4}{7}\\ (\frac{4}{5})^{13}:(\frac{4}{5})^{12}=\frac{4}{5}[/tex]