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1. 2x + 3y = 1 এবং 5x - 2y + 7 = 0 সমীকরণদ্বয়ের সমাধান কত?
- A. (1, 1)
- B. (1, 1)
- C. (1, 1)
- D. (1, 1)
Answer: Option C
Explanation:
2x + 3y = 1.............. (i)
5x–2y + 7 = 0
Or, 5x - 2y = - 7......... (ii)
(i)×5 - (ii)×2
15у + 4y = 5 + 14
Or, 19y = 19
y = 1
5x - 2×1 = - 7
Or, 5x = - 7 + 2
Or, 5x = - 5
x = - 1
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