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प्रश्न
Add: 14x + 10y - 12xy - 13, 18 - 7x - 10y + 8xy, 4xy
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उत्तर
(14x + 10y - 12xy - 13) + (18 - 7x - 10y + 8yx) + 4xy
= 14x + 10y - 12xy - 13 + 18 - 7x - 10y + 8yx + 4xy
= 14x - 7x + 10y - 10y - 12xy + 8yx + 4xy - 13 + 18
= x (14 - 7) + y (10 - 10) + xy (-12 + 8 + 4) - 13 + 18
= 7x + 5
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