document.write( "Question 147698This question is from textbook
\n" );
document.write( ": hi, i need to solve this using elimination method and check.\r
\n" );
document.write( "\n" );
document.write( " 4x+y=1
\n" );
document.write( " x-2y=-2 \n" );
document.write( "
Algebra.Com's Answer #108058 by GKelly(4)![]() ![]() ![]() You can put this solution on YOUR website! First, multiply the first equation 4x + y = 1 by 2. You'll end up with the following:\r \n" ); document.write( "\n" ); document.write( "2(4x + y =1); 8x + 2y = 2. Now you may eliminate the 2y; see below\r \n" ); document.write( "\n" ); document.write( "8x + 2y = 2 \n" ); document.write( "x - 2y = -2\r \n" ); document.write( "\n" ); document.write( "Cancel out the 2y. You will now have 9x = 0 so X = 0\r \n" ); document.write( "\n" ); document.write( "Now, plug 0 into the x value in the first equation so you can then solve for y.\r \n" ); document.write( "\n" ); document.write( "4x + y = 1 \n" ); document.write( "4(0) +y = 1 \n" ); document.write( "0 + y = 1 \n" ); document.write( "y = 1 - 0 \n" ); document.write( "y = 1\r \n" ); document.write( "\n" ); document.write( "X = 0 and y = 1\r \n" ); document.write( "\n" ); document.write( "Now plug in these values into the first equation:\r \n" ); document.write( "\n" ); document.write( "4x + y = 1 \n" ); document.write( "4(0) + 1 = 1 \n" ); document.write( "0 + 1 = 1 \n" ); document.write( "1 = 1 YOU'RE DONE.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |