I need assistance with working this out?!

John Sullivan started a business. During the first month (February 20) the following transactions occurred. Show the effect of each transaction on the accounting equation: Assets = Liabilities + Owner's Equity: After each transaction, show the new totals. Invested cash in the business, $27,000 Bought office equipment on account, $7, 500. Bought office equipment for cash, $1, 600. Paid cash on account to supplier in transaction (b), $2, 300