document.write( "Question 536511: Find the solution to each system by the addition (elimination) method. Check your answers.
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\n" ); document.write( " 4s-5t=18
\n" ); document.write( " 6s+10t=-8\r
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Algebra.Com's Answer #352404 by Maths68(1474)\"\" \"About 
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\"4s-5t=18\".........(1)
\n" ); document.write( "\"6s%2B10t=-8\"...........(2)\r
\n" ); document.write( "\n" ); document.write( "Take (2)
\n" ); document.write( "\"6s%2B10t=-8\"
\n" ); document.write( "\"2%283s%2B5t%29=-8\"
\n" ); document.write( "Divide by 2 both sides
\n" ); document.write( "\"2%283s%2B5t%29%2F2=-8%2F2\"
\n" ); document.write( "\"3s%2B5t=-4\"...............(3)
\n" ); document.write( "Add (1) and (3)
\n" ); document.write( "\"4s-5t=18\"
\n" ); document.write( "\"3s%2B5t=-4\"
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\n" ); document.write( "\"7s=14\"
\n" ); document.write( "Divide by 7 both sides
\n" ); document.write( "\"7s%2F7=14%2F7\"
\n" ); document.write( "\"s=2\"
\n" ); document.write( "Put the value of s in (1)
\n" ); document.write( "\"4s-5t=18\".........(1)
\n" ); document.write( "\"4%282%29-5t=18\"
\n" ); document.write( "\"8-5t=18\"
\n" ); document.write( "\"-5t=18-8\"
\n" ); document.write( "\"-5t=18-8\"
\n" ); document.write( "\"-5t=10\"
\n" ); document.write( "Divide by -5 both sides
\n" ); document.write( "\"-5t%2F-5=10%2F-5\"
\n" ); document.write( "\"t=-2\"\r
\n" ); document.write( "\n" ); document.write( "(s,t)=(2,-2)\r
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\n" ); document.write( "\n" ); document.write( "Check
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\n" ); document.write( "Put the values of x and y in (2)
\n" ); document.write( "\"6%282%29%2B10%28-2%29=-8\"
\n" ); document.write( "\"12-20=-8\"
\n" ); document.write( "\"-8=-8\"\r
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