$($a$)$ Complete the iterations of moment distribution method for Case $1$

$($b$)$ Compute $R$ due to Case $1$

$($c$)$ Perform moment distribution for Case $2,$ by assuming $=1,\frac{600}{E}I$

$($d$)$ Compute R$\text{'}$ due to Case $2$

$($e$)$ Compute all final end moments

$($f$)$ Compute support reactions

$($g$)$ Draw the bending moment diagram$($s$)$