document.write( "Question 105871: 4x+5y=11,y=3x-13 confused on how to solve \n" ); document.write( "

Algebra.Com's Answer #77041 by MathLover1(20855) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( " $\"4x%2B5y=11\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=3x-13+\"$ you can take this value of $\"y\"$ and substitute it in first expresion, so you can find $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"4x+%2B+5%283x+-+13%29+=+11\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"4x+%2B+15x+-+65+=+11\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"19x+=+11+%2B+65\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"19x+=+76\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x+=+76%2F19\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x+=+4\"$ \r
\n" ); document.write( "\n" ); document.write( "now, go back to
\n" ); document.write( " $\"y+=+3x+-+13\"$ \r
\n" ); document.write( "\n" ); document.write( "and find $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y+=+3%2A4+-+13\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y+=+12+-+13\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y+=+-1\"$ \r
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