document.write( "Question 171936: twice the result of subtracting an unknown number from five is eight.find the number \n" ); document.write( "

Algebra.Com's Answer #127048 by ptaylor(2198) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let x=the unknown number
\n" ); document.write( "when we subtract it from 5, we get:
\n" ); document.write( "(5-x); twice (5-x) is:
\n" ); document.write( "2(5-x) and we are told that this equals 8, so:
\n" ); document.write( "2(5-x)=8 get rid of parens (distributive law)
\n" ); document.write( "10-2x=8 subtract 10 from each side
\n" ); document.write( "10-10-2x=8-10
\n" ); document.write( "-2x=-2 divide each side by -2
\n" ); document.write( "x=1-----------------------the unknown number
\n" ); document.write( "CK
\n" ); document.write( "5-1=4
\n" ); document.write( "2*4=8
\n" ); document.write( "Hope this helps---ptaylor \n" ); document.write( "

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