document.write( "Question 317461: I have a problem in my math lab that I can not figure out here is what I have so far...\r
\n" ); document.write( "\n" ); document.write( "Solve by substitution method\r
\n" ); document.write( "\n" ); document.write( "3x+8y=18
\n" ); document.write( "-5x+y=13
\n" ); document.write( "solve for y, Y=13+5x\r
\n" ); document.write( "\n" ); document.write( "3x+8(13+5x)=18\r
\n" ); document.write( "\n" ); document.write( "remove the parenthesis\r
\n" ); document.write( "\n" ); document.write( "3x+104+40x=18\r
\n" ); document.write( "\n" ); document.write( "What is the coefficient of x? 43\r
\n" ); document.write( "\n" ); document.write( "Now solve for x. \r
\n" ); document.write( "\n" ); document.write( "The answer for x is -2 but I do not know how to get this answer can you please show me what i am doing wrong.\r
\n" ); document.write( "\n" ); document.write( "The answer I get is this 43x=132 \r
\n" ); document.write( "\n" ); document.write( "Thank you
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Algebra.Com's Answer #227330 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
You added instead of subtracted.
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\n" ); document.write( "\"43x%2B104=18\"
\n" ); document.write( "\"43x=-86\"<--- Subtract 104 from both sides
\n" ); document.write( "\"x=-2\"<--- Divide both sides by 43
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