document.write( "Question 548420:  4x+3y=9
\n" );
document.write( "2x-y=7\r
\n" );
document.write( "\n" );
document.write( "Y=2x-7
\n" );
document.write( "4x+3+2x-7)=9 
\n" );
document.write( "Solve each system by substitution  \n" );
document.write( "
Algebra.Com's Answer #356988 by gsmani_iyer(201)    You can put this solution on YOUR website! \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "From the equation (2), y=2x-7; Replacing the value of this y in Eqn.(1), we get\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "By simplifying (3), 4x+6x-21 = 9 \n" ); document.write( " = 10x = 21+9 \n" ); document.write( " = 10x = 30 \n" ); document.write( " x = 3; (Dividing both the sides by 10) \n" ); document.write( "Replacing the value of x by 3 in eqn.1, we get \n" ); document.write( " \n" ); document.write( " 4*3+3y = 9 \n" ); document.write( " 12-9 = -3y \n" ); document.write( " y = \n" ); document.write( "\n" ); document.write( " So x=3; y=(-1) Answer. \n" ); document.write( "  |