document.write( "Question 535037: Solve the system algebraically.\r
\n" ); document.write( "\n" ); document.write( "2x + y - 10 = 0
\n" ); document.write( "x - y - 5 = 0\r
\n" ); document.write( "\n" ); document.write( "What is the value of y? \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #351741 by mananth(16946) $\"\"$ $\"About$

You can put this solution on YOUR website!
2 x + 1 y = 10 .............1
\n" ); document.write( "1 x -1 y = 5 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 1
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "2 x + 1 y = 10
\n" ); document.write( "1 x + -1 y = 5
\n" ); document.write( "Add the two equations
\n" ); document.write( "3 x = 15
\n" ); document.write( "/ 3
\n" ); document.write( "x = 5
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "2 x + 1 y = 10
\n" ); document.write( "10 + 1 y = 10
\n" ); document.write( " 1 y = 10 -10
\n" ); document.write( " y = 0
\n" ); document.write( "
\n" ); document.write( " \n" ); document.write( "

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