Question 150478
 Solve using the addition and multiplication principles. 
<pre><font size = 4><b>
 5 + 2x < 23 

The solution set is {x, x __ __} 

Type and inequality symbol, and then an integer or fraction.


 5 + 2x < 23

Add -5 to both sides

 5 + 2x < 23
-5        -5
 0 + 2x < 18
     2x < 18

Multiply both sides by {{{1/2}}}

       {{{(1/2)(2x) < 18/2}}}

             {{{9}}}
    {{{(1/cross(2))(cross(2)x) < cross(18)/cross(2)}}}
             {{{1}}}
          {{{x<9/1}}}

          {{{x<9}}}

Solution set:

    { {{{x}}},{{{x<9}}} }

Edwin</pre>