Three infinite planes current sheets problem

Three infinite planes current sheets, each of a uniform current density, exist in the coordinate planes of a Cartesian coordinate system. The magnetic flux density due to these current sheets are given at three points as follows: at (1,5,3), = 0( + 2), at (6, -1,2), = 0(− +
2 + ) , at (1,2,-2), = 0( + 2) . Let the current densities on the , , on the x=0,y=0 and z=0 planes, respectively.
Find the magnetic flux density at the following points:
a/ (-1,1,4)
b/ (-1,-2,-4)

Really need help with this one, I have no idea where to start. I'm confident with vectors, though, but what about this problem? I've only read how to deal with one plane of current sheet.

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Baluncore
Science Advisor
2019 Award
It is clear that the OP here is missing critical information.

There is a similar question on the web.
"Magnetic flux density due to three plane current sheets".
Three infinite plane current sheets, each of a uniform current density, exist in the coordinate planes of a Cartesian coordinate system. The magnetic flux densities due to these current sheets are given at three points as follows:
at (1, 2, 3), B = 3 Bo ax
at (7, -5, 6), B = Bo( -ax + 2az)
at (8, 9, -4), B = Bo( ax + 2ay ).

Find the magnetic flux densities at the following points:
(a) (-6, -2, -3);
(b) (-4, -5, 7); and
(c) (6, -3, -5).

The first thing to note is that the magnitude of B due to a current sheet of infinite extent is constant throughout space, but that the sign changes when crossing the sheet.