can someone show me how to do the math on this since ive been distributing the beta to return on market, then beta to risk free

A stock has an expected return of 9.8 percent, a beta of 1.30, and the expected return on the market is 9.10 percent. What must the risk-free rate be? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. Omit the "%" sign in your response.) Risk-free rate %