document.write( "Question 668309: How do you use the substitution method with y= 2x+3 and y=-4x+9? \n" ); document.write( "

Algebra.Com's Answer #415441 by ReadingBoosters(3246) $\"\"$ $\"About$

You can put this solution on YOUR website!
Starting with
\n" ); document.write( "y = 2x+3
\n" ); document.write( "y = 4x+9
\n" ); document.write( "...
\n" ); document.write( "Set the y values equal to each other
\n" ); document.write( "...
\n" ); document.write( "2x+3 = 4x+9
\n" ); document.write( "Combine like terms
\n" ); document.write( "2x - 4x = 9 - 3
\n" ); document.write( "-2x = 6
\n" ); document.write( "...
\n" ); document.write( "Divide both sides by -2
\n" ); document.write( " $\"highlight_green%28x=-3%29\"$
\n" ); document.write( "...
\n" ); document.write( "Check $\"cartoon%28%0D%0A2%28-3%29+%2B+3+=+-6+%2B+3+=+-3%2C%0D%0A4%28-3%29+%2B+9+=+-12+%2B+9+=+-3%29\"$
\n" ); document.write( ".....................
\n" ); document.write( "Delighted to help.
\n" ); document.write( "-Reading Boosters
\n" ); document.write( "Wanting for others what we want for ourselves.
\n" ); document.write( "www.MyHomeworkAnswers.com
\n" ); document.write( " \n" ); document.write( "

\n" );