conversion from cash basis to accrued basis

[bbmak]

I have problem doing conversion from cash basis to accrued basis.

My instructor told me to do a T account

For example
Income Statement
Service Revenue 900,000
Operating Expense 670,000

Balance Sheet
AR Beg-$100,000 End-$120,000
AP(op exp) Beg-$60,000 End-$70,000

I need to converse these # back to cash basis to do the statement of cash flow.

Are there any website teach you how to do the conversion??? I really need help