Question: Use Cramer's rule to solve for y without solving for x, z, and w. 4x + y + z + w = 6 3x +

Use Cramer's rule to solve for y without solving for x, z, and w.
4x + y + z + w = 6
3x + 7y - z + w = 1
7x + 3y - 5z + 8w = - 3
x + y + z + 2w = 3

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