Please help me to solve that math question
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let product 1 has x units,product2 has y units,product 3 has z units
then 3x+2y+5z=1800
4x+y+3z=1450
2x+4y+z=1900
then 3x+2y+5z=1800
4x+y+3z=1450
2x+4y+z=1900
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