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प्रश्न
If 15x + 17y = 21 and 17x + 15y = 11, then find the value of x + y.
योग
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उत्तर
The given equations are
15x + 17y = 21 ...(1)
17x + 15y = 11 ...(2)
Adding equations (1) and (2)
15x + 17y = 21
+ 17x + 15y = 11
32x + 32y = 32
Dividing both sides by 32, we get
∴ x + y = 1
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