document.write( "Question 1015989: The solution to this system of equations is (-2,1). Find the values of p and q\r
\n" ); document.write( "\n" ); document.write( " px + (9-q)y=-10
\n" ); document.write( "(3p+1)-(q-6)y=-7 \n" ); document.write( "

Algebra.Com's Answer #632403 by ikleyn(52787) $\"\"$ $\"About$

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\n" ); document.write( "The solution to this system of equations is (-2,1). Find the values of p and q\r
\n" ); document.write( "\n" ); document.write( " px + (9-q)y=-10
\n" ); document.write( "(3p+1)-(q-6)y=-7
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document.write( "Substitute the given solution x = -2 and y = 1 into the system. You will get\r\n" );
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document.write( "(-2)*p + 1*(9-q) = -10,\r\n" );
document.write( "3p + 1 - 1*(q-6) =  -7.\r\n" );
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document.write( "Simplify:\r\n" );
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document.write( "-2p - q = -10 - 9,\r\n" );
document.write( "3p - q  = -7 - 1 - 6,\r\n" );
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document.write( "or\r\n" );
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document.write( "-2p - q = -19.\r\n" );
document.write( " 3p - q = -14.\r\n" );
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document.write( "It is your system for p and q.\r\n" );
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document.write( "Now solve it to find p and q. For it, distract the first equation from the second one.\r\n" );
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document.write( "The next steps are obvious. Please complete the solution yourself.\r\n" );
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