Question 101839
solving for t
{{{8t-r=12t}}}
subtract 8t from both sides
{{{8t-8t-r=12t-8t}}}
{{{-r=4t}}}
divide both sides by 4
{{{-r/4=4t/4}}}
{{{-r/4=t}}}
<b>Answer: {{{t=-r/4}}}