x + 2y = 4 এবং x/y = 2 হলে, x - y এর মান কত?
Solution
Correct Answer: Option A
x + 2y = 4 ------------ (1)
x/y = 2
⇒ x = 2y ------------ (2)
(1) নং হতে,
x + 2y = 4
⇒ x + x = 4
⇒ 2x = 4
∴ x = 2
y = 2/2 = 1
x - y = 2 - 1
= 1
x/y = 2
⇒ x = 2y ------------ (2)
(1) নং হতে,
x + 2y = 4
⇒ x + x = 4
⇒ 2x = 4
∴ x = 2
y = 2/2 = 1
x - y = 2 - 1
= 1
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