Step 1 :\( x(t) = -3r(t-2) + 2u(t-3) + \delta(6t+9 + t^2) + 2\delta(t-5) -3r(t-5) \)
Step 2 :\( x(3t+1) = -3r((3t+1)-2) + 2u((3t+1)-3) + \delta(6(3t+1)+9 + (3t+1)^2) + 2\delta((3t+1)-5) -3r((3t+1)-5) \)
Step 3 :\( x(3t+1)+2= -3r(3t-1) + 2u(3t-2) + \delta(6(3t+1)+9 + (3t+1)^2) + 2\delta(3t-4) -3r(3t-4)+2 \)