document.write( "Question 60858: Solve the system by substitution. x + y = 12 y = 2x \n" ); document.write( "
Algebra.Com's Answer #41814 by jai_kos(139)\"\" \"About 
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Given the equation, we get x + y = 12,y = 2x
\n" ); document.write( "We shall break up the equation into two parts , we get
\n" ); document.write( " x + y = 12 --------(1)
\n" ); document.write( " y = 2x -------(2)
\n" ); document.write( " Now substitute equation(2) in equation(1), we get
\n" ); document.write( "x + 2x = 12
\n" ); document.write( "3x = 12
\n" ); document.write( "Divide by 3 on both sides, we get
\n" ); document.write( "x = 4.
\n" ); document.write( "Now substitute the value of “x” in equation(2), we get
\n" ); document.write( "x = 2 * 4 = 8
\n" ); document.write( "Hence the value of “x” = 4 and the value of “y” = 8
\n" ); document.write( " \n" ); document.write( "
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