Bob has two savings accounts. He deposited $100 more into account B than account A.

Bob has two savings accounts. He deposited $100 more into account B than account A. After a period of time, account A has earned $105 in interest at 7%, and account B has earned $80 in interest at a rate of 5%.Write an equation to represent the situation. Explain each variable used. How much money did Bob initially deposit into each account? Solve the equation