document.write( "Question 38859: using elimination to solve this system of equations, how would i solve
\n" );
document.write( "8x-3y=-11
\n" );
document.write( "2x-5y=27 \n" );
document.write( "
Algebra.Com's Answer #24371 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! From \n" ); document.write( "8x - 3y = -11 \n" ); document.write( "2x - 5y = 27 \n" ); document.write( "let us multiply the second equation by 4 and subtract it from the first, thus eliminating the x's... \n" ); document.write( "8x - 3y = -11 \n" ); document.write( "-(8x - 20y = 108) \n" ); document.write( "and we get \n" ); document.write( "17y = -119 \n" ); document.write( "y = -7 \n" ); document.write( "and then by substituting we get \n" ); document.write( "2x - 5(-7) = 27 \n" ); document.write( "2x + 35 = 27 \n" ); document.write( "2x = -8 \n" ); document.write( "x = -4 \n" ); document.write( " |