How do tax deductions work when you rent out your primary house?

I'm going to rent out my primary (and only) house for few years, as I'm moving for work to a different state.
How do i deduct the mortgage interest paid and property tax? Do I deduct it from my income tax, as usual? Do I subtract it from the rent income to reduce (or almost eliminate) taxes on the rental income? or maybe both?!

Thanks.

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