Question 367876
2w+x-3y+z=4
w-3x+y+z=32
-w+2x+2y-z=-10
w+x-y+3z=14
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Using determinants on an Excel sheet:
Det = -42
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w = -456/-42 = 76/7
x = 150/-42 = -25/7
y = -258/-42 = 43/7
z = -180/-42 = 30/7