document.write( "Question 1006294: Solve the system by elimination. Enter you answer as an ordered pair, or type none or infinite.
\n" );
document.write( "-5x+3y=6
\n" );
document.write( "x-y=4 \r
\n" );
document.write( "\n" );
document.write( "(I think i already posted this one but idk) \n" );
document.write( "
Algebra.Com's Answer #622454 by sofiyac(983)![]() ![]() You can put this solution on YOUR website! -5x+3y=6 equation a \n" ); document.write( "x-y=4 equation b\r \n" ); document.write( "\n" ); document.write( "Multiply equation b by 5, leave a as is \n" ); document.write( "-5x+3y=6 \n" ); document.write( "5x-5y=20 now add the two equations, when you do this x-terms add to 0 so you're left with y term on the left side \n" ); document.write( "-2y=26 divide both sides by -2 \n" ); document.write( "y=-13 now plug in into either of original equations and solve for x, i'll use equation b \n" ); document.write( "x-(-13)=4 \n" ); document.write( "x+13=4 \n" ); document.write( "x=-17 \n" ); document.write( "(-17,-13) \n" ); document.write( " |