x-2y=8, 3x-2y=4 সমীকরণ জোটে x এর মান কত?
Solution
Correct Answer: Option B
x - 2y = 8.............(1)
3x - 2y = 4.............(2)
(2) - (1)⇒
3x - 2y - (x - 2y) = 4 - 8
বা, 3x - 2y - x + 2y = - 4
বা, 2x = - 4
বা, x = - 2
3x - 2y = 4.............(2)
(2) - (1)⇒
3x - 2y - (x - 2y) = 4 - 8
বা, 3x - 2y - x + 2y = - 4
বা, 2x = - 4
বা, x = - 2
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