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4 unknowns using Cramers Rule Calculator
a =
b =
c =
d =
e =
<-- Equation 1
f =
g =
h =
i =
j =
<-- Equation 2
k =
l =
m =
n =
o =
<-- Equation 3
p =
q =
r =
s =
t =
<-- Equation 4