document.write( "Question 496612: Hi Sir/ Mdm.,\r
\n" ); document.write( "\n" ); document.write( "I come to a question of inequalities which made me feel curious, the question and working is as below:\r
\n" ); document.write( "\n" ); document.write( "x-1/(x+1)≥ 2
\n" ); document.write( "X – 1 ≥ 2( x +1)
\n" ); document.write( "x-1 ≥ 2x +2
\n" ); document.write( "x -2x ≥2+1
\n" ); document.write( "-x ≥ 3
\n" ); document.write( "X ≤ -3\r
\n" ); document.write( "\n" ); document.write( "Since X ≤ -3, so the possible values for x will be -3,-4,-5,....\r
\n" ); document.write( "\n" ); document.write( "Am I right?\r
\n" ); document.write( "\n" ); document.write( "I test the inequalities with -3, the answer is 2≥ 2, so it is acceptable,\r
\n" ); document.write( "\n" ); document.write( "But why when I test the inequalities with - 4 and so on , the value is less than 2,\r
\n" ); document.write( "\n" ); document.write( "So does that mean this inequalities only have one possible value of x, that is x=-3.\r
\n" ); document.write( "\n" ); document.write( "So should I write my answer as X ≤ -3, or x= -3?
\n" ); document.write( "

Algebra.Com's Answer #336505 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
using hindsight from your 1st solution, x seems to be negative\r
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\n" ); document.write( "\n" ); document.write( "this means that in the second line of the solution (where you multiplied by x+1), the direction of the inequality should have changed
\n" ); document.write( "___ this sometimes happens when the sign of a quantity is unknown
\n" ); document.write( "___ that's why you check at the end of a solution
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