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কোন একটি সংখ্যার অর্ধেকের সঙ্গে 6 যোগ করলে যে উত্তর পাওয়া যায়, সংখ্যাটির দ্বিগুণ থেকে 21 বিয়োগ করলে একই ফল পাওয়া যায়। সংখ্যাটি কত?

18

20

22

24

ANSWER : 1

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<p><span style = "box - sizing: border - box; font - weight: bolder; font - size: 18px; color: #212529; font - family: bangla,  sans - serif; text - align: justify; background - color: #ffffff;">মনেকরি,  সংখ্যাটি X</span></p>
<p><span style = "box - sizing: border - box; font - weight: bolder; font - size: 18px; color: #212529; font - family: bangla,  sans - serif; text - align: justify; background - color: #ffffff;">প্রশ্নমতে,  </span></p>
<p><span style = "box - sizing: border - box; font - weight: bolder; font - size: 18px; color: #212529; font - family: bangla,  sans - serif; text - align: justify; background - color: #ffffff;">X/2   +   6  =  2X  -  21</span></p>
<p><span style = "box - sizing: border - box; font - weight: bolder; font - size: 18px; color: #212529; font - family: bangla,  sans - serif; text - align: justify; background - color: #ffffff;">বা,  </span><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;">X/2   =  2X  -  21  -  6</span></p>
<p><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;">বা,  </span><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;">X/2   =  2X  - 27</span></p>
<p><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;">বা,  X  =  4X  -  54</span></p>
<p><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;">বা,  X  -  4X  =   -  54</span></p>
<p><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;">বা,    - 3X  =   -  54</span></p>
<p><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;">বা,  X  =  54/3 </span></p>
<p><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;">সুতরাং </span><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;">X</span><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;"> </span><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;"> =  18</span></p>
<p><span style = "background - color: #ffffff; color: #212529; font - family: bangla,  sans - serif; font - size: 18px; font - weight: bold; text - align: justify;">অর্থাৎ সংখ্যাটি 18</span></p>

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