What Vic said.

Note that you can arrange some confusing arrangements that appear to
alter the arrangement but don't.

So:

- Tension in rope is supported_load / ropes_supporting load when ropes
are perpendicular to gravitational field

- Tension in rope is constant everywhere for a static load.

- if you build  systems with ropes at angles to the gravitational
field then you need simple force- vector additions BUT the principle
is the same. (Sum of vertical forces applied to the load is zero. Some
of all horizontal forces applied to the load is zero).

- Dynamic / moving system, all bets are off.


             R
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