The only rule to follow is
Divide dividend by divisor and the mention the quotient and things left after remains in place of remainder
Here is a sample

X+ y = 44
x - y = 6
—————
2x = 50
x = 25
y = 44-x = 19
Answer:
4 fish and 3 cportion of chips- $28.35
Step-by-step explanation:
125 divided by 5 is 25. hope this helped but im not to sure what friendly parts are sorry
(x-4)(x-3) so what you do is
x -4
x x^2 -4x
-3 -3x 12
x^2-7x+12
your answer would be -7x