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प्रश्न
Evaluate:
(8a + 15b) − (3b − 7a)
योग
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उत्तर
(8a + 15b) − (3b − 7a)
= 8a + 15b − 3b + 7a
= 8a + 7a + 15b − 3b
= 15a + 12b
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