document.write( "Question 152273: how do you solve this equation:
\n" );
document.write( "y=2x-5
\n" );
document.write( "y=6x+7 \r
\n" );
document.write( "\n" );
document.write( "i don't understand how to do this and i haven't looked at one of these problems in a LONG time! \n" );
document.write( "
Algebra.Com's Answer #111934 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! how do you solve this equation: \n" ); document.write( "y=2x-5 \n" ); document.write( "y=6x+7 \n" ); document.write( ": \n" ); document.write( "If both expressions = y then: \n" ); document.write( "6x + 7 = 2x - 5 \n" ); document.write( ": \n" ); document.write( "Subtract 2x from both sides: \n" ); document.write( "6x - 2x + 7 = -5 \n" ); document.write( ": \n" ); document.write( "Subtract 7 from both sides \n" ); document.write( "4x = - 5 - 7 \n" ); document.write( "4x = -12 \n" ); document.write( ": \n" ); document.write( "Divide both sides by 5 \n" ); document.write( "x = \n" ); document.write( "x = -3 \n" ); document.write( ": \n" ); document.write( "Find y using the 1st equation, substitute -3 for x \n" ); document.write( "y = 2(-3) - 5 \n" ); document.write( "y = -6 - 5 \n" ); document.write( "y = -11 \n" ); document.write( ": \n" ); document.write( "Check solution in the 2nd equation: \n" ); document.write( "6(-3) + 7 = \n" ); document.write( "-18 + 7 = -11 (which is y) \n" ); document.write( " |