How can I solve these?

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Three painters, Beth, Bill, and Edie, working together, can paint the exterior of a home in 2 hours. Bill and Edie together have painted a similar house in 3 hours. One day, all three worked on this same kind of house for 1 hours, after which Edie left. Beth and Bill required 2 more hours to finish. Assuming no gain or loss in efficiency, how long should it take each person to complete such a job alone? Select the correct choice below and fill in any answer boxes in your choice. O A. It would take Beth hours to complete the job, Bill hours to complete the job, and Edie hours to complete the same job. (Type integers or fractions.)Write the system of equations corresponding to the augmented matrix. Then perform the row operations R2 = - 5r, + 2 and R3 = 4r, + 3 on the 1 -7 5 4 given augmented matrix. 5 -5 5 3 4 2 23 Which of the following is the system of equations corresponding to the augmented matrix? O A. X - 7y +5 = 4 B. X - 7y + 5z = 4 5x - 5y + 5 = 3 5x - 5y + 5z = 3 - 4x + 2y +2 = 3 - 4x + 2y + 2z = 3 O C. x - 7y + 5z = 4w OD. x - 7y + 5z +4 = 0 5x - 5y + 5z = 3w 5x - 5y + 5z + 3 = 0 - 4x + 2y + 2z = 3w - 4x + 2y + 2z + 3 = 0 Perform the row operations R2 = - 5r, + 2 and R3 = 4r, + 13 on the original matrix given in the problem statement, and enter the resulting matrix below.Solve the following system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. X - 2y + 3z = 18 2x+y +Z = 6 - 4x + 2y - 3z = - 33 Select the correct choice below and, if necessary, fill in the answer box(es) in your choice. O A. The solution is (Simplify your answers.) O B. There are infinitely many solutions. The solution can be written as {(x,y,z) | x = , y= , z is any real number}. (Simplify your answers. Type expressions using z as the variable.) O C. There are infinitely many solutions. The solution can be written as