Work Step by Step
Distributing the RHS (right-hand side), $-t-2=9t-72$ Adding t+72 to both sides, $72-2=9t+t$ or $70=10t$ $t=7$ Plugging it back in yields, $-9=9*-1$ which is true.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.