document.write( "Question 744087: I am using substitution to find coordinates for x and y. Problem reads: 2x+3y=25 , where y=3x+1.
\n" ); document.write( "I understood that to be 2x+3*(3x+1)=25,
\n" ); document.write( "Using distributive property, now I have 2x+9x+1=25.
\n" ); document.write( "Simplified that to 11x=24, or x=24/11
\n" ); document.write( "My textbook shows the correct final answer for coordinates is x=2, y=7, so I am way off. Can you tell where I went wrong?
\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #453176 by stanbon(75887)\"\" \"About 
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I am using substitution to find coordinates for x and y.
\n" ); document.write( "Problem reads:
\n" ); document.write( "2x+3y=25
\n" ); document.write( " y = 3x+1
\n" ); document.write( "----------------------
\n" ); document.write( "I understood that to be 2x+3*(3x+1)=25,
\n" ); document.write( "Using distributive property, now I have 2x+9x+3 = 25.
\n" ); document.write( "Simplified that to 11x=22, or x = 2
\n" ); document.write( "Solve for \"y\":
\n" ); document.write( "y = 3x+1
\n" ); document.write( "y = 3*2+1 = 7
\n" ); document.write( "========================
\n" ); document.write( "My textbook shows the correct final answer for coordinates is x=2, y=7
\n" ); document.write( "========================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
\n" );