The sum of currents in a parallel network can be calculated as I = I₁ + I₂ + ... + I_n where I = sum of currents (amps) and I₁, I₂, ... I_n = parallel current (amps).

You are working with a parallel network with three currents. If the sum of the currents is $\displaystyle {17}$ amps and two of the currents are $\displaystyle {9}$ amps and $\displaystyle {3}$ amps respectively, how many amps is the third current?

I₃ = amps