document.write( "Question 977582: I need to solve for y and x using the substitution method but im stuck or it could have no answers im not sure...the equations are \r
\n" ); document.write( "\n" ); document.write( "3x+2y=27
\n" ); document.write( "5x-3y=7\r
\n" ); document.write( "\n" ); document.write( "I have to solve for x and y thank you if you can help me. \n" ); document.write( "
Algebra.Com's Answer #599120 by Cromlix(4381)\"\" \"About 
You can put this solution on YOUR website!
Hi there,
\n" ); document.write( "3x+2y=27...(1)
\n" ); document.write( "5x-3y=7 ...(2)
\n" ); document.write( "Use number(2)
\n" ); document.write( "5x - 3y = 7
\n" ); document.write( "5x = 7 + 3y
\n" ); document.write( "x = (7 + 3y)/5
\n" ); document.write( "Substitute this value for x in (1)
\n" ); document.write( "3x + 2y = 27
\n" ); document.write( "3((7+3y)/5) + 2y = 27
\n" ); document.write( "Multiply out
\n" ); document.write( "(21+9y)/5 + 2y = 27
\n" ); document.write( "Multiply through by 5
\n" ); document.write( "21 + 9y + 10y = 135
\n" ); document.write( "Collect like terms
\n" ); document.write( "19y = 135 - 21
\n" ); document.write( "19y = 114
\n" ); document.write( "y = 6
\n" ); document.write( "Substitute y = 6 into (2)
\n" ); document.write( "5x - 3y = 7
\n" ); document.write( "5x - 3(6) = 7
\n" ); document.write( "5x -18 = 7
\n" ); document.write( "5x = 7 + 18
\n" ); document.write( "5x = 25
\n" ); document.write( "x = 5
\n" ); document.write( "Hope this helps:-)
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