Work Step by Step
Solving the problem by cross multiplying, we obtain: $$ 3\cdot \:4=\left(x+1\right)x\\ 12=\left(x+1\right)x\\ x=3,\:x=-4$$
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.