Work Step by Step
You have the equation: 21=-2t+3 and you have to solve for t: 21=-2t+3 (subtract 3 from both sides) 18=2t t=-9 Check your work: 21=-2(-9)+3 21=18+3 21=21 The equation is equal so t=-9.
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.