Solve the following using Cramers Rule: w + x + y + z =, w + x + y + z =, w + x + y + z =, w + x + y + z = Practice Problem

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

The following four unknown practice equations have been generated for you:
19w + 14x + 5y - 13 = -9
4w + 3x - 19y + 14 = 12
13w + 8x + 20y + 18 = 12
13w + 19x + 20y + 14 = 11
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