Write the following recurring decimal as a simplified commor fraction. \( \mathbf{0 , 7 4} \)

Hisoblang: \( \sqrt{66^{2}-44^{2}-22^{2}} \) \( \begin{array}{llll}\text { A) } 22 & \text { B) } 44 & \text { C) } 0 & \text { D) } 33\end{array} \)

e) \( \sqrt[2]{\left(\frac{49}{9}\right)^{11} \cdot\left(\frac{49}{9}\right)^{-4}:\left(\frac{98}{18}\right)^{6}: \frac{196}{36}+[3-(0, \hat{6}-1)]^{2}}= \)

Subtract the product of 7 and 5 from the additive inverse of -30 .

b. \( \quad \) Simplify \( (\sqrt{5})^{-2} \times 75^{1 / 2} \times 12^{-1 / 2} \)

Resolver: a) \( \frac{5}{8} \cdot\left(\frac{1}{4}\right)^{-1}+\frac{9}{5} \cdot \sqrt{\frac{27}{9} \cdot 3}-\frac{7}{10}+0,8= \)