Question 20806
9(11-k)=3(3k-9)
99-9k=9k-27   <--add 9k to both sides
(99-9k)+9k=(9k-27)+9k
99=18k-27        <--add 27 to both sides
99+27=(18k-27)+27
126=18k       <--divide both sides by 18
{{{126/18}}}={{{18k/18}}}
7=k