In order to solve the following equations: AX + BY = k1 and CX + DY = K2, we implement the circuit shown in the figure. If we are interested in the particular case of 2X + 3Y = 40 and 2X + Y = 5, find R1, R1', Va, and Vb if R2 = R3 = R4 = 100 KΩ and R2' = R3' = R4' = 100 KΩ.