document.write( "Question 24238: simultaneous equation a. x + 3y = 5 B. 3x + 4y = 54 \n" ); document.write( "
Algebra.Com's Answer #13937 by elephantsize(7) ![]() You can put this solution on YOUR website! x+3y=5. \n" ); document.write( "So,\r \n" ); document.write( "\n" ); document.write( "x=5-3y.\r \n" ); document.write( "\n" ); document.write( "Now,\r \n" ); document.write( "\n" ); document.write( "3x+4y=54.\r \n" ); document.write( "\n" ); document.write( "So,\r \n" ); document.write( "\n" ); document.write( "3(5-3y)+4y=54. \n" ); document.write( "15-9y+4y=54. \n" ); document.write( "15-5y=54. \n" ); document.write( "15-54=5y. \n" ); document.write( "5y=15-54. \n" ); document.write( "5y= -39. \n" ); document.write( "y=(-39/5) or -7.8\r \n" ); document.write( "\n" ); document.write( "Now,\r \n" ); document.write( "\n" ); document.write( "x=5-3y. \n" ); document.write( "x=5- (3X-7.8) \n" ); document.write( "x=5-(-23.4) \n" ); document.write( "x=5+23.4 \n" ); document.write( "x=28.4 \n" ); document.write( " \n" ); document.write( " |