document.write( "Question 741688: sir what is (2x)/(3)-(7y)/(2)= -5
\n" ); document.write( "(5x)/(3)-(y)/(2)= 4? \n" ); document.write( "

Algebra.Com's Answer #452108 by mananth(16946) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%282x%29%2F%283%29-%287y%29%2F%282%29=+-5\"$ \r
\n" ); document.write( "\n" ); document.write( "LCM of the denominator is 6\r
\n" ); document.write( "\n" ); document.write( " $\"%282x%2A6%29%2F%283%29-%287y%2A6%29%2F%282%29=+-5%2A6\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "multiply equation by 6\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "4x-21y=-30.................................(1)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"%285x%29%2F%283%29-%28y%29%2F%282%29=+4\"$
\n" ); document.write( "same way multiply eqation by 6\r
\n" ); document.write( "\n" ); document.write( "10x-3y=24...............................(2)\r
\n" ); document.write( "\n" ); document.write( "solve for x & y\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 1.00
\n" ); document.write( "Multiply (2) by -7.00
\n" ); document.write( "4.00 x -21.00 y = -30.00
\n" ); document.write( "-70.00 x + 21.00 y = -168.00
\n" ); document.write( "Add the two equations
\n" ); document.write( "-66.00 x = -198.00
\n" ); document.write( "/ -66.00
\n" ); document.write( "x = 3.00
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "4.00 x -21.00 y = -30.00
\n" ); document.write( "12.00 -21.00 y = -30.00
\n" ); document.write( " -21.00 y = -30.00 -12.00
\n" ); document.write( " -21.00 y = -42.00
\n" ); document.write( " y = 2.00
\n" ); document.write( " \n" ); document.write( "

\n" );