Please hel with Mastering Physics, very lost in magnetism

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rk2930
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Homework Statement


A long wire carrying a 6.0A current perpendicular to the xy-plane intersects the x-axis at x=−2.0cm. A second, parallel wire carrying a 3.5Acurrent intersects the x-axis atx=+2.0cm.

At what point on the x-axis is the magnetic field zero if the two currents are in the same direction?
Express your answer using two significant figures.

At what point on the x-axis is the magnetic field zero if the two currents are in opposite directions?

I am not sure how to get started

Homework Equations

The Attempt at a Solution

 

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nvr mind i solved it :)