allery2x + y = 7 এবং x + y = 4 থেকে, y-এর মান হলো
A4
B2
C3
D1
Answer & Solution
Correct answer: D. 1
বিয়োগ করলে পাওয়া যায় x = 3, এবং তারপর y = 4 - 3 = 1।
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