document.write( "Question 189527: I am having solving systems through elimination trouble!\r
\n" );
document.write( "\n" );
document.write( "Here are the equations:\r
\n" );
document.write( "\n" );
document.write( "0.3x-0.2y=4\r
\n" );
document.write( "\n" );
document.write( "0.4x+0.3y=5/19\r
\n" );
document.write( "\n" );
document.write( "I can solve for \"y\" but when I get here: (I am lost)\r
\n" );
document.write( "\n" );
document.write( "3x-2(-170/19)=40 the answer:140/19 (these are fractions a/b) \r
\n" );
document.write( "\n" );
document.write( "Please help me \n" );
document.write( "
Algebra.Com's Answer #142206 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 0.3x-0.2y=4 \n" ); document.write( "0.4x+0.3y=5/19 \n" ); document.write( "---------------- \n" ); document.write( "3x - 2y = 40 (x 10) \n" ); document.write( "76x + 57y = 50 (x 190) \n" ); document.write( "--------------------- \n" ); document.write( "171x - 114x = 2280 (x 57) \n" ); document.write( "152x + 114y = 100 (x 2) \n" ); document.write( "------------------------ Add \n" ); document.write( "323x = 2380 \n" ); document.write( "x = 2380/323 \n" ); document.write( "x = 140/19 \n" ); document.write( "------------- \n" ); document.write( "3*(140/19) - 2y = 40 \n" ); document.write( "-2y = 340/19 \n" ); document.write( "y = -170/19 \n" ); document.write( " \n" ); document.write( " |