document.write( "Question 141616: Solve the substitution:\r
\n" ); document.write( "\n" ); document.write( "(3x + 5y = 5
\n" ); document.write( "(x -2y = 9
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Algebra.Com's Answer #103164 by oscargut(2103)\"\" \"About 
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3x + 5y = 5
\n" ); document.write( "x -2y = 9 then x=2y+9\r
\n" ); document.write( "\n" ); document.write( "substituting in the first eq we have 3(2y+9)+5y=5\r
\n" ); document.write( "\n" ); document.write( "6y+27+5y=5\r
\n" ); document.write( "\n" ); document.write( "11y=-22
\n" ); document.write( "then y=-2 and x=2(-2)+9=5
\n" ); document.write( "Answer: x=5 and y=-2
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