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प्रश्न
Simplify:
2 (3a − b) − 5 (a − 3b)
उत्तर
2 (3a − b) − 5 (a − 3b)
= 6a − 2b − 5b + 15b
= 6a − 5a + 15b − 2b
= a + 13b
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