\flQuestion 9: [5 points] Solve the system of equations by any method. 3:4y+z = 15 {1) 22+4y+z =1 {2) 22+3y+5z =20 {3) Entertne exact answer as an ordered triple, (3,9,2). Hint: There are multiple ways to solve this system of equations. . A strategy is to eliminate one ofthe variables and end up with 2 equations in 2 variables. . One way to do that is to begin with equation 2to get .2 = 15 2 a: 4 y. . Then substitute l 2 a: 4 y for z in equations 1 and 3. - You now have 2 equations {the modied equations 1 and 3} in 2 variables {z and y}. - Solve this smaller system for a.- and y and then use a = 16 2 z 4 y to calculate z