document.write( "Question 628002: using the substitution method to solve the following system of equations.\r
\n" ); document.write( "\n" ); document.write( "x + y = 3
\n" ); document.write( "2x + 2y = 10
\n" ); document.write( " Please show work
\n" ); document.write( "

Algebra.Com's Answer #395384 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
multiply the first by 2
\n" ); document.write( "2x+2y=6
\n" ); document.write( "2x+2y=10
\n" ); document.write( "subtract
\n" ); document.write( "0=-4
\n" ); document.write( "No they don't so there is no solution.
\n" ); document.write( "They are parallel.
\n" ); document.write( "y=-x+3
\n" ); document.write( "divide the second by 2
\n" ); document.write( "x+y=5
\n" ); document.write( "y=-x+5
\n" ); document.write( "they have the same slope (-1)
\n" ); document.write( "I didn't use substitution.
\n" ); document.write( "x=3-y
\n" ); document.write( "2(3-y)+2y=10
\n" ); document.write( "6-2y+2y=10
\n" ); document.write( "6=10
\n" ); document.write( "no they don't
\n" ); document.write( "there is no solution
\n" ); document.write( "
\n" );