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प्रश्न
Jasmine has some money. Mother gave her 7 rupees. Jasmine now has 10 rupees. How much did she have to start with?
योग
उत्तर
Let us suppose Jasmine had y rupees.
∴ y + 7 = 10
∴ y + 7 - 7 = 10 - 7
∴ y + 0 = 3
∴ y = 3
It means that Jasmine had 3 rupees to start with.
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