document.write( "Question 242363: 0.4x+2<0.8x-9 \n" ); document.write( "

Algebra.Com's Answer #177536 by checkley77(12844) $\"\"$ $\"About$

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0.4x+2<0.8x-9
\n" ); document.write( ".4x-.8x<-9-2
\n" ); document.write( "-.4x<-11
\n" ); document.write( "x>-11/-.4 note: the < changes to a > when divided by a negative value.
\n" ); document.write( "x>27.5 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "Let x=28
\n" ); document.write( ".4*28+2<.8*28-9
\n" ); document.write( "11.2+2<22.4-9
\n" ); document.write( "11.2<13.4
\n" ); document.write( " \n" ); document.write( "

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