document.write( "Question 628571: If x+y=40, then what is 2x equal to? \n" ); document.write( "
Algebra.Com's Answer #395742 by Maths68(1474)\"\" \"About 
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x+y=40
\n" ); document.write( "Multiply both sides by 2
\n" ); document.write( "2(x+y)=(2)(40)
\n" ); document.write( "2x+2y=80
\n" ); document.write( "Subtract 2y from both sides
\n" ); document.write( "2x+2y-2y=80-2y
\n" ); document.write( "2x=80-2y
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