document.write( "Question 163867: this is a method of elimination
\n" ); document.write( "A-2B=16
\n" ); document.write( "B+3=3A
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Algebra.Com's Answer #120714 by Fombitz(32388)\"\" \"About 
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1.\"A-2B=16\"
\n" ); document.write( "2.\"B%2B3=3A\"
\n" ); document.write( "Use eq. 2 to find an expression for B in terms of A.
\n" ); document.write( "2.\"B%2B3=3A\"
\n" ); document.write( "\"B=3A-3\"
\n" ); document.write( "Now substitute this expression into eq. 1 and solve for A,
\n" ); document.write( "1.\"A-2B=16\"
\n" ); document.write( "\"A-2%283A-3%29=16\"
\n" ); document.write( "\"A-6A%2B6=16\"
\n" ); document.write( "\"-5A=10\"
\n" ); document.write( "\"A=-2\"
\n" ); document.write( "From eq. 2,
\n" ); document.write( "\"B=3A-3\"
\n" ); document.write( "\"B=3%28-2%29-3\"
\n" ); document.write( "\"B=-6-3\"
\n" ); document.write( "\"B=-9\"
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\n" ); document.write( "Check your answers using the equations.
\n" ); document.write( "1.\"A-2B=16\"
\n" ); document.write( "\"-2-2%28-9%29=16\"
\n" ); document.write( "\"-2%2B18=16\"
\n" ); document.write( "\"16=16\"
\n" ); document.write( "True.
\n" ); document.write( "2.\"B%2B3=3A\"
\n" ); document.write( "\"-9%2B3=3%28-2%29\"
\n" ); document.write( "\"-6=-6\"
\n" ); document.write( "True.
\n" ); document.write( "Good answers.
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