document.write( "Question 579412: how do you solve 8x-2y=12 7x+3y=15? \n" ); document.write( "

Algebra.Com's Answer #370978 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
solve
\n" ); document.write( "8x-2y=12
\n" ); document.write( "7x+3y=15
\n" ); document.write( "-------------
\n" ); document.write( "Multiply thru 1st by 3 and 2nd by 2 to get:
\n" ); document.write( "24x - 6y = 36
\n" ); document.write( "14x + 6y = 30
\n" ); document.write( "----
\n" ); document.write( "Add and solve for \"x\":
\n" ); document.write( "38x = 66
\n" ); document.write( "x = 33/19
\n" ); document.write( "-----
\n" ); document.write( "Solve for \"y\":
\n" ); document.write( "8(33/19) - 2y = 12
\n" ); document.write( "264/19 - 2y = 12
\n" ); document.write( "---
\n" ); document.write( "132/19 - y = 6
\n" ); document.write( "y = (132/19)-(114/19)
\n" ); document.write( "y = 18/19
\n" ); document.write( "-----
\n" ); document.write( "Check the arithmetic.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "

\n" );