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प्रश्न
Simplify: 2 [a – 3 {a + 5 {a – 2) + 7}]
बेरीज
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उत्तर
2 [a – 3 {a + 5 {a – 2) + 7}]
= 2 [a - 3 {a + 5a - 10 + 7}]
= 2 [a - 3a - 15a + 30 - 21]
= 2a - 6a - 30a + 60 - 42
= 2a - 36a + 60 - 42
= -34a + 18
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