Question 826608
<pre>
{{{5c-3-3&1/2c<12}}}

Change the mixed numbr {{{3&1/2}}} to {{{7/2}}}

{{{5c-3-expr(7/2)c<12}}}

Multiply every term on both sides by 2 to clear of fractions:

{{{10c-6-7c<24}}}

{{{3c-6<24}}}

add 6 to both sides:

{{{3c<30}}}

Divide both sides by 3

{{{c<10}}}

-------------------

{{{10- (-7) < -k/2 +2 +10}}}

Change -(-7) to +7

{{{10+7 < -k/2 +2 +10}}}

Combine 10+7 and 2+10

{{{17<-k/2+12}}}

Multiply every term on both sides by 2 to clear of fractions:

{{{34<-k+24}}}

Add k to both sides:

{{{k+34<24}}}

Add -34 to both sides

{{{k<-10}}}

Edwin</pre>