c=w+9 and c=w-3
w=c-9 and w=c+3
These pairs of equations are best relationship models between c and w.
How to find pair of best relationship model for c and w?
We have given,
Variable c is 9 more than variable w which can be written as
c=w+9
It can also be written as :w=c-9
It is also given that,Variable c is also 3 less than variable w, which can be written as:
c=w-3
It can also be written as: w=c+3
This way our pair of relationship between c and w are:
c=w+9 and c=w-3
w=c-9 and w=c+3
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