12a + 6b + 3c + d -27 = 0 20b + 12a + C +5d -30 =0 7a + 18b + 30c +4d -48 = 0 6a +7b +2c +220 -5=0 a. Write an algorithm to run Jacobi method b. Use your algorithm to solve the above system for the unknown variables a,b,c,d using a tolerance of 0.01. Report the estimated values of each variable as well as the number of iterations run c. Plot your algorithm estimates of a,b,c,d across every iteration