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प्रश्न
Subtract the second expression from the first.
(5x + 4y + 7z); (x + 2y + 3z)
बेरीज
उत्तर
(5x + 4y + 7z) − (x + 2y + 3z)
= 5x + 4y + 7z − x − 2y − 3z
= (5x − x) + (4y − 2y) + ( 7z − 3z)
= 4x + 2y + 4z
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