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Linear AlgebraHardRow Reduction & Rank

Row Reduction & Rank · Hard problem

Solve the system   −3x+2y+0z=19,3x+3y+1z=11,−3x+1y+4z=34\;-3x + 2y + 0z = 19, \quad 3x + 3y + 1z = 11, \quad -3x + 1y + 4z = 34. What is yy?