Select the correct inequality to make a true statement. \( \frac{5}{6} \) ? \( \frac{3}{4} \) Question Help: D Post to forum

4. Find: \( \begin{array}{llll}\text { (a) } 17-(30) & \text { (b) }-60-(90) & \text { (c) }(-15)-(-18) & \text { (d) }(-25)-(1) \\ \text { (e) } 101-(-101) & \text { (f) }(-56)-(-65) & \end{array} \)

a) \( 3 \frac{1}{2}: 2 \frac{1}{7}=2 \frac{1}{3}: t \);

i) \( \left\{\left(\frac{1}{3}\right)^{-3}-\left(\frac{1}{2}\right)^{-3}\right\} \div\left(\frac{1}{4}\right)^{-3} \)

\( \Delta = \left| \begin{array} { c c c } { 3 } & { - 1 } & { 2 } \\ { 1 } & { 4 } & { 1 } \\ { 1 } & { - 1 } & { 2 } \end{array} \right| = \)

(iii) \( \frac{\left(\frac{-2}{3}\right)^{3} \times \frac{343}{729}}{\left(\frac{7}{9}\right)^{2} \times \frac{16}{81}}= \)