14 x + 10 Y - 12 x y - 13 18 - 7 x minus 3 Y + 8 x y 4 xy
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Step-by-step explanation:
14x + 10Y - 12xy - 1318 - 7x - ( 3Y + 8xy X 4xy )
= 14x + 10Y - 12xy - 1318 - 7x - 3Y - 8xy X (-4xy)
= 14x + 10Y - 12xy - 1318 -7x -3Y + 32xy
= 7x + 7Y + 20xy - 1318
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