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प्रश्न
Find the total savings of a boy who saves ₹ (4x – 6y), ₹ (6x + 2y), ₹ (4y – x) and ₹ (y – 2x) for four consecutive weeks.
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उत्तर
4x − 6y
6x + 2y
–x + 4y
–2x + y
7x + y
∴ Total saving = ₹(7x + y)
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