g = 3.2 (slider from -5 to 5, step 0.1)
f = -0.6 (slider from -5 to 5, step 0.1)
d = 1.2 (slider from -5 to 5, step 0.1)
c = 0.2 (slider from -5 to 5, step 0.1)
b = -0.3 (slider from -5 to 5, step 0.1)
a = 1.4 (slider from -5 to 5, step 0.1)
B1 = 1
A2 = 2
A3 = 6
B2 = -1
B3 = -1
A1: a
C1 = -1
C2 = 1
C3 = 1
D1 = 4
D2 = -1
D3 = 0
e: (a * x) + (b * y) = c
h: (d * x) + (f * y) = g
i: x = Determinant[{{c, b}, {g, f}}] / Determinant[{{a, b}, {d, f}}]
j: y = Determinant[{{a, c}, {d, g}}] / Determinant[{{a, b}, {d, f}}]