Question 486996
{{{k=(2c-9d)/8}}}


{{{8k=2c-9d}}}


{{{8k-2c=-9d}}}


{{{-8k+2c=9d}}}


{{{2c-8k=9d}}}


{{{(2c-8k)/9=d}}}


{{{d=(2c-8k)/9}}}