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प्रश्न
If 2x + y = 7 and x + 2y = 11, then find the value of x + y.
योग
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उत्तर
2x + y = 7 ...(i)
x + 2y = 11 ...(ii)
Add equations (i) and (ii), we get
2x + y = 7
+ x + 2y = 11
3x + 3y = 18
x + y = 6 .....(Dividing both sides by 3)
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