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Question Number 60775 by Pathen Vincent last updated on 25/May/19
Commented by Prithwish sen last updated on 25/May/19
$$\mathrm{Divide}\:\mathrm{all}\:\mathrm{3}\:\mathrm{eqiations}\:\mathrm{by}\:\mathrm{xyz}\:\mathrm{and}\:\mathrm{then}\:\mathrm{apply} \\ $$$$\mathrm{crammers}\:\mathrm{rule}\:\mathrm{for}\:\frac{\mathrm{1}}{\mathrm{x}},\:\frac{\mathrm{1}}{\mathrm{y}}\:,\frac{\mathrm{1}}{\mathrm{z}} \\ $$