document.write( "Question 442725: solve the system by the substitution method.
\n" ); document.write( "15x-y=51
\n" ); document.write( "y=x^2+5 \n" ); document.write( "
Algebra.Com's Answer #305415 by stanbon(75887)\"\" \"About 
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solve the system by the substitution method.
\n" ); document.write( "15x-y=51
\n" ); document.write( "y=x^2+5
\n" ); document.write( "-------------
\n" ); document.write( "Substitute for \"Y\" and solve for \"x\":
\n" ); document.write( "15x-[x^2+5] = 51
\n" ); document.write( "15x-x^2-5 = 51
\n" ); document.write( "x^2-15x+56 = 0
\n" ); document.write( "Factor:
\n" ); document.write( "(x-7)(x-8) = 0
\n" ); document.write( "x = 7 or x = 8
\n" ); document.write( "----
\n" ); document.write( "Solve for \"y\":
\n" ); document.write( "y = x^2+5
\n" ); document.write( "If x = 7, y = 54
\n" ); document.write( "If x = 8, y = 69
\n" ); document.write( "=====================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
\n" );