document.write( "Question 26521: I am struggling some with solving equations using substitutions. Here is a one question on my homework assignment. \r
\n" ); document.write( "\n" ); document.write( "y= 3x - 10
\n" ); document.write( "y= 2x -15
\n" ); document.write( "My answer was --> y= 5x^2 - 25\r
\n" ); document.write( "\n" ); document.write( "Amy I even close, I really dont understand substitutions. My parents are working on getting me a tutor.
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Algebra.Com's Answer #14391 by Paul(988)\"\" \"About 
You can put this solution on YOUR website!
SInce you know that y=3x-10 is your subsitution. Subsitute this number is the nest equation.
\n" ); document.write( "y=2x-15
\n" ); document.write( "3x-10=2x-15
\n" ); document.write( "3x-2x=-15+10
\n" ); document.write( "x=-5\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "y=2(-5)-15
\n" ); document.write( "y==-25\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Hence, x = -and y= -25.
\n" ); document.write( "PAUL.
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