3x - 7y + 10 = 0 এবং y - 2x - 3 = 0 এর সমাধান-
Solution
Correct Answer: Option D
দেওয়া আছে,
3x - 7y = -10........... (1)
- 2x + y = 3 ..........(2)
(1)নং + (2)নং × 7⇒
3x - 7y - 14x + 7y = - 10 + 21
⇒ -11x = 11
⇒ x = -1
এখন, (2)নং সমীকরণে x এর মান বসিয়ে পাই,
-2(-1) + y = 3
⇒ 2+y = 3
⇒ y = 1
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