document.write( "Question 255175: x+3y=19
\n" ); document.write( "x-y=-1
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\n" ); document.write( "what does it equal?
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Algebra.Com's Answer #187471 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
There are several ways to solve this.
\n" ); document.write( "You can substitute or eliminate.
\n" ); document.write( "Let's do elimination
\n" ); document.write( "Subtract second equation from the first which eliminates the x's. Be careful with signs plus and minus.
\n" ); document.write( "Divide both sides by 4. The reason for 4 should be obvious. If not do the subtraction again.\r
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