Work Step by Step
Solving the equation by isolating x, we find: $$-2x = 8 \\ x=-4$$ Checking: $$-2(-4)+7 = 15 \\15=15$$
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.