Since there are a 100 cents in a dollar. the 100 is the denominator.
46/100, reduce; 23/50, can't be reduced any further. so 23/50 is the fraction.
First, I would subtract 150 from 870. You get 720. Then I would divide that equally among the four artists. 720/4=180. So each person's share is $180.
Answer:

Firstly, multiply the number and variable in the perenthesis. Then move the variable on it's own side of the equation. The simplify.
Which variable are we solving for?
For y:
y= 5x-4/ 13
For x:
x= 13y+4/ 5
If you're trying to get x your answer would be -21.