document.write( "Question 872830: SOLVING SYSTEMS OF EQUATIONS BY SUBSTITUTION
\n" ); document.write( "3X-4Y=2
\n" ); document.write( "4X+3Y=14 \n" ); document.write( "
Algebra.Com's Answer #526450 by mananth(16946)\"\" \"About 
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3 x + -4 y = 2 .............1
\n" ); document.write( "-4 y = 2 + -3 x
\n" ); document.write( "/ -4 =
\n" ); document.write( " y = - 1/ 2 + 3/ 4 x
\n" ); document.write( "4 x + 3 y = 14 .....................2
\n" ); document.write( "Substitute y in (2)
\n" ); document.write( "4 x + 3 ( - 1/ 2 + 3/ 4 x ) = 14
\n" ); document.write( "4 x + -3/ 2 + 2 1/ 4 x = 14
\n" ); document.write( "4 x 9/ 4 x = 31/ 2
\n" ); document.write( "25/4 x = 31/ 2
\n" ); document.write( "/ 25/4
\n" ); document.write( "x= 62/25
\n" ); document.write( "Plug the value of x in (1)
\n" ); document.write( "3 x + -4 y = 2
\n" ); document.write( "3 * 62/25 + -4 y = 2
\n" ); document.write( "186/25 + -4 y = 2
\n" ); document.write( "-4 y = -136/25
\n" ); document.write( "/ -4
\n" ); document.write( "y= 34/25
\n" ); document.write( "m.ananth@hotmail.ca
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