271 . B - C = কত?
- A. 2bc/b
- B. 2b/c
- C. 1
- D. 2c/b
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273 . 23x - 6 = 11x + 6 সমীকরণে x এর মান কত?
- A. 8
- C. 2
- D. 1
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274 . (3x - 8) + 12 = 4 সমীকরণে x এর মান কত?
- A. 8
- B. 4
- C. 1
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275 . 25x + 27y = 131 এবং 27x + 25y = 129 সমীকরণে (x, y) এর মান কত?
- A. (4, 6)
- B. (1, 2)
- C. (4, 5)
- D. (2, 3)
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276 . ax + by = a2 + b2 এবং 2bx - ay = ab সমীকরণে (x, y) এর মান কত?
- A. (3a, 4b)
- B. (2a, b)
- C. (b, a)
- D. (a, b)
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277 . x + 2y = 3, 4x - y = 3 সমীকরণে x এবং y এর মান কত?
- A. x = 1 এবং y = 5
- B. x = 4 এবং y = 5
- C. x = 2 এবং y = 3
- D. x = 1 এবং y = 1
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278 . x/a + a = x/b + b সমীকরণে x এর মান কত?
- A. a + b
- B. ab
- C. b
- D. a
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279 . 3x + 9 = - 3(2x + 3) সমীকরণে x এর মান কত?
- A. - 8
- B. 4
- C. - 2
- D. 2
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280 . (2x - 1) (x + 3) = 2x(x + 1) এর সঠিক সমাধান কোনটি?
- A. x = 9
- B. x = 3
- C. x = 2
- D. x = 1
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281 . (3x + 1)/5 = (2x - 7)/3 এর সঠিক সমাধান কোনটি?
- A. x = 55
- B. x = 45
- C. x = 38
- D. x = 28
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282 . x/(x - 2) = 3 এর সঠিক সমাধান কোনটি?
- A. 6
- B. 4
- C. 3
- D. 2
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283 . 5(2x - 1) = 4(2x + 1) + 7 এর সঠিক সমাধান কোনটি?
- A. x = 32
- B. x = 16
- C. x = 8
- D. x = 4
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284 . 6(2x + 3) = 14x এর সঠিক সমাধান কোনটি?
- A. 4
- B. 6
- C. 9
- D. 12
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285 . (x + 1) (x + 2) = (x + 4) (x - 2) এর সঠিক সমাধান কোনটি?
- A. x = - 5
- B. x = 5
- C. x = 10
- D. x = - 10
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