Looking at systems is important in science because

systems have many parts.

all disciplines depend on systems.

one element is most important in a system.

systems help identify parts and simplify solutions.

systems help identify parts and simplify solutions.

Explanation:

Systems are very important in science because they are made up of many parts and can help simplify solutions better.

A system is made up of several parts that are interacting together as a whole. They are very important in solving scientific problems and looking introspectively into a problem.

The parts that makes up the system are equally important as the whole. Systems are typified by what transpires at the level of their parts. Viewing a problem from a system wide angle helps scientists have better knowledge and can be vital in solving scientific problems.

step-by-step explanation:

we are given

we have to simplify it

firstly, we will factor it

now, we can cancel like terms

now, we can combine it

so, we get

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.