document.write( "Question 61563: Solve the system by substitution. x + y = 12
\n" ); document.write( " y = 2x
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Algebra.Com's Answer #42373 by asha(30)\"\" \"About 
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x+y =12 eqn,1
\n" ); document.write( "y =2x eqn.2
\n" ); document.write( "plugging the value of y in eqn.1 we get
\n" ); document.write( "x +2x =12
\n" ); document.write( "3x =12
\n" ); document.write( "x =12/3 =4
\n" ); document.write( "y =2x =2*4 =8
\n" ); document.write( "the answer is x=4 and y=8
\n" ); document.write( "good luck !!!
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