document.write( "Question 1019249: X+3y=10
\n" ); document.write( "-3x+y=-10 \n" ); document.write( "

Algebra.Com's Answer #635195 by Cromlix(4381) $\"\"$ $\"About$

You can put this solution on YOUR website!
Hi there,
\n" ); document.write( "I will do it by elimination method.
\n" ); document.write( "x+3y=10........(1)
\n" ); document.write( "-3x+y=-10......(2)
\n" ); document.write( "Multiply (1) by 3
\n" ); document.write( "3x + 9y = 30......(1)
\n" ); document.write( "-3x + y = -10.....(2)
\n" ); document.write( "Add (1) and (2)
\n" ); document.write( "......10y = 20
\n" ); document.write( "........y = 2
\n" ); document.write( "Substitute y = 2 into (1)
\n" ); document.write( "x + 3y = 10
\n" ); document.write( "x + 3(2) = 10
\n" ); document.write( "x + 6 = 10
\n" ); document.write( "x = 10 - 6
\n" ); document.write( "x = 4
\n" ); document.write( "{4,2}
\n" ); document.write( "Hope this helps :-) \n" ); document.write( "

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