Straight line depreciation method.solve it

The formula is:

$$\text{Annual Depreciation Expense} = \frac{\text{Cost of Asset} - \text{Salvage Value}}{\text{Useful Life of Asset (in years)}}$$

Example:
If an asset costs $10,000, has a salvage value of $1,000, and a useful life of 5 years, the annual depreciation would be:

$\text{Annual Depreciation Expense} = \frac{\$10,000 - \$1,000}{5 \text{ years}} = \frac{\$9,000}{5 \text{ years}} = \$1,800 \text{ per year}$

So, the asset's value decreases by $1,800 each year for 5 years.