Michelle bought seven packs of crayons for 15.75. write a fraction equivalent of the coast

Find the unit rate.  It's $15.75 for 7 packs, or 

$15.75/7 = $2.25 per pack.

This is the same as 2 1/4 dollars per pack.

Please check your spelling and be sure the problems you share are complete.

15.75 should be written $15.75, and it's "cost," not "coast."

3:5

Step-by-step explanation:

33x-54y=6x+6y-3x-10y

33x-54y=3x-4y

30x=50y

3x=5y