Question 715718
<pre>
  4x+13 > -7+8x
 -8x        -8x
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 -4x+13 > -7
    -13  -13
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 -4x    > -20

{{{(-4x)/(-4)}}}  < {{{(-20)/(-4)}}}   When dividing by a negative numbers,
                  we must reverse the inequality from > to <
  x    <  5     

Edwin</pre>