document.write( "Question 347981: -2 (3 + x) < 4x + 4 < 8x \n" ); document.write( "

Algebra.Com's Answer #248824 by checkley77(12844) $\"\"$ $\"About$

You can put this solution on YOUR website!
-2 (3 + x) < 4x + 4 < 8x
\n" ); document.write( "-6-2X<4X+4<8X
\n" ); document.write( "-6<2X+4X-8X<-4
\n" ); document.write( "-6<-2X<-4
\n" ); document.write( "-6/-2>X>-4/-2 [NOTE THE SIGNS CHANGE WHEN DIVIDING BY A NEGATIVE VALUE]
\n" ); document.write( "3>X>2 ANS.
\n" ); document.write( "PROOF:
\n" ); document.write( "LET X=2.5
\n" ); document.write( "-2(3+2.5)<4*2.5+4<8*2.5
\n" ); document.write( "-2*5.5<10+4<20
\n" ); document.write( "-11<14<20 \n" ); document.write( "

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