Consider the following three systems of linear equations. System A System B System C -9x -5y=-2 [A1] -27x -15y= -6 [B1] -7x=-21 [C1] 4x+3y=-3 [A2] 4x+ 3y=-3 [B2] 4x+3y=-3 [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? O x Equation [A1] - Equation [B1] X 5 O x Equation [A2] - Equation [B2] O x Equation [A1] + Equation [A2] - Equation [B2] O x Equation [A2] + Equation [A1] - Equation [B1] How do we transform System B into System C? O x Equation [B1] - Equation [C1] O x Equation [B2] - Equation [C2] O x Equation [B1] + Equation [B2] - Equation [C2] O x Equation [B2] + Equation [B1] - Equation [C1]