document.write( "Question 725926: 1x+6y=372 and 4x+12=780 solve system using elimination \n" ); document.write( "

Algebra.Com's Answer #444399 by mananth(16946) $\"\"$ $\"About$

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1 x + 6 y = 372 .............1
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\n" ); document.write( "4 x + 12 y = 780 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -2
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-2 x -12 y = -744
\n" ); document.write( "4 x + 12 y = 780
\n" ); document.write( "Add the two equations
\n" ); document.write( "2 x = 36
\n" ); document.write( "/ 2
\n" ); document.write( "x = 18
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "1 x + 6 y = 372
\n" ); document.write( "18 + 6 y = 372
\n" ); document.write( " 6 y = 372 -18
\n" ); document.write( " 6 y = 354
\n" ); document.write( " y = 59
\n" ); document.write( "x= 18
\n" ); document.write( "y= 59
\n" ); document.write( "m.ananth@hotmail.ca
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