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CBSE Class 10 Answered

solve 6x=2y+9 and3x+4y=12 (cross-multiplication)
Asked by | 27 Apr, 2008, 04:27: PM
answered-by-expert Expert Answer

     6x - 2y - 9 = 0  ------------- ( 1)

    3x + 4y - 12 = 0  ------------ (2)

            x                        y                     1

  --------------  =     -------------   =    ----------

  24 + 36                -27 + 72            24 + 6

          x                    y                  1

    -----------     =   ----------  =  ---------

      60                    45                   30

   x   =  60 /30 = 2

  y =  45 /30  =3/2 

 

Answered by | 27 Apr, 2008, 07:49: PM
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