document.write( "Question 450561: Hi I am trying to solve this system\r
\n" ); document.write( "\n" ); document.write( "2x+4y=8
\n" ); document.write( "3x+10y=18\r
\n" ); document.write( "\n" ); document.write( "I tried the addition method and came up with this:
\n" ); document.write( "3(2x+4y)=3(8)-
\n" ); document.write( "2(3x+10y)= 2(18)=
\n" ); document.write( "-8y=-12=
\n" ); document.write( "y=2/3\r
\n" ); document.write( "\n" ); document.write( "but I know this is not the right answer because the original problem was in dollars and you can't have 2/3rds of a dollar \n" ); document.write( "

Algebra.Com's Answer #309890 by mananth(16946) $\"\"$ $\"About$

You can put this solution on YOUR website!
2x+4y=8 .............1
\n" ); document.write( "3x+10y=18 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -5
\n" ); document.write( "Multiply (2) by 2
\n" ); document.write( "-10x-20y=-40
\n" ); document.write( "6x+20y=36
\n" ); document.write( "Add the two equations
\n" ); document.write( "-4x=-4
\n" ); document.write( "/-4
\n" ); document.write( "x=1.00
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "2x+4y=8
\n" ); document.write( "2+4y=8
\n" ); document.write( "4y=8-2
\n" ); document.write( "4y=6
\n" ); document.write( "y=1.50
\n" ); document.write( " \n" ); document.write( "

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