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Question

3x-7y+10=0 এবং y-2x-3=0 এর সমাধান ----

x=1, y= -1

x=1, y= 1

x=-1, y= -1

x=-1, y= 1

ANSWER : 4

Descrption

<math xmlns = "http://www.w3.org/1998/Math/MathML"><mn>3</mn><mi>x</mi><mo> - </mo><mn>7</mn><mi>y</mi><mo> </mo><mo>  +  </mo><mn>10</mn><mo> </mo><mo> = </mo><mn>0</mn><mo> </mo><mo>.</mo><mo>.</mo><mo>.</mo><mo>.</mo><mo>.</mo><mo>.</mo><mo> </mo><mo>(</mo><mi>i</mi><mo>)</mo><mo> </mo><mspace linebreak = "newline"/><mi>y</mi><mo> - </mo><mn>2</mn><mi>x</mi><mo> - </mo><mn>3</mn><mo> = </mo><mn>0</mn><mspace linebreak = "newline"/><mo>⇒</mo><mi>y</mi><mo> = </mo><mn>2</mn><mi>x</mi><mo>  +  </mo><mn>3</mn><mo>.</mo><mo>.</mo><mo>.</mo><mo>.</mo><mo> </mo><mo>(</mo><mn>2</mn><mo>)</mo><mo> </mo><mspace linebreak = "newline"/><mo>(</mo><mn>1</mn><mo>)</mo><mo> </mo><mi>হ</mi><mi>ত</mi><mi>ে</mi><mo>,</mo><mo> </mo><mn>3</mn><mi>x</mi><mo> </mo><mo> - </mo><mn>7</mn><mo> </mo><mo>(</mo><mn>2</mn><mi>x</mi><mo> </mo><mo>  +  </mo><mn>3</mn><mo>)</mo><mo> </mo><mo>  +  </mo><mn>10</mn><mo> = </mo><mn>0</mn><mo> </mo><mspace linebreak = "newline"/><mo>⇒</mo><mn>3</mn><mi>x</mi><mo> - </mo><mn>14</mn><mi>x</mi><mo> - </mo><mn>21</mn><mo>  +  </mo><mn>10</mn><mo> = </mo><mn>0</mn><mspace linebreak = "newline"/><mo>⇒</mo><mo> - </mo><mn>11</mn><mi>x</mi><mo> = </mo><mn>11</mn><mspace linebreak = "newline"/><mo>.</mo><mo>'</mo><mo>.</mo><mi>x</mi><mo> = </mo><mo> - </mo><mn>1</mn><mo> </mo><mo>,</mo><mo> </mo><mi>y</mi><mo> = </mo><mn>1</mn></math>

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