Question 6 Solve the following systems of equations by first row reducing to reduced row echelon form. (a) 2x + Y = 3 4x + У == 7 2x + 5y -1 (b) X + 2y + 7z = 5 X + У + 4z = │ -x | - (c) (d) 2x + 3y + х -x 2x x - + ― 3y 2y + Z = + 4y + 6z + 2y + 2x+4y א Z Z 2y + 2z + 11z = || || 37 པ་ 2z = 0 0 20 = 0 3 = + 4w = -1 5w = 5

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