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Linear AlgebraHardRow Reduction & Rank

Row Reduction & Rank · Hard problem

Solve the system   1x+2y−3z=−6,−3x+4y+3z=28,−2x+1y−3z=−13\;1x + 2y - 3z = -6, \quad -3x + 4y + 3z = 28, \quad -2x + 1y - 3z = -13. What is yy?