Grinder Variable

Algebra help please?
A grinder orginally coast $12,500 and is depreciated at a constant yearly rate. After five years, the book value of the grinder is $3,000. What is the yearly amount of depreciation? Please slove using one variable and explain how to slove the problem.
Thank you
The total depreciation is 12500 – 3000 = 9500
Yearly rate = 9500/5 = 1900
Delta GR450 Variable Bench Grinder Noise
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