analyze the transactions through in terms of increase and decrease.

1. increase office equipment(asset) $18000 and decrease cash $ 18000. balance is unaffected.

2. increase in office equipment(asset) $ 10400, increase bill payable(liability)

3. advertisement expenses decrease(revenue) $4500.

4. increase asset, increase bill payable(liability) $6000.

5. decrease in the owner's capital.