Consider the following three systems of linear equations. System A System B System C 13x = 39 [81] x=3 [C1] - 5x – 4y = 9 [A1] 9x +2y = 15 [A2] 9x + 2y = 15 [B2] 9x +2y = 15 (C2] Answer the questions below. For each, choose the transformation and then fill in the blank with the correct number. The arrow (-) means the expression on the left becomes the expression on the right. How do we transform System A into System B?