document.write( "Question 617988: solve the following system of equations using substitution.
\n" ); document.write( "-2x-10y=-12
\n" ); document.write( "3x+y=4 \n" ); document.write( "
Algebra.Com's Answer #388665 by mananth(16946)\"\" \"About 
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3 x + 1 y = 4 .............1
\n" ); document.write( "y = 4-3x
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\n" ); document.write( "-2 x + -10 y =-12 .....................2
\n" ); document.write( "Substitute y in (2)
\n" ); document.write( "-2x-10(4-3x)= -12
\n" ); document.write( "-2x-40 +30x= -12
\n" ); document.write( "-2x+30 x = 28
\n" ); document.write( "28 x = 28
\n" ); document.write( "/ 28
\n" ); document.write( "x= 1
\n" ); document.write( "Plug the value of x in (1)
\n" ); document.write( "3 x + 1 y = 4
\n" ); document.write( "3 * 1 + 1 y = 4
\n" ); document.write( "3 + 1 y = 4
\n" ); document.write( "1 y = 1
\n" ); document.write( "/ 1
\n" ); document.write( "y= 1 \r
\n" ); document.write( "\n" ); document.write( "Solution (1,1)
\n" ); document.write( "m.ananth@hotmail.ca
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