Just plot the points. easssyyyyyyo
About 7.5 miles if you divide 45/3 is 15 so divide 15/2 which is 7.5
First bring all terms in 'a' to the left side of the formula by subtracting ac from both sides
ab - ac - cd = ac - ac
ab - ac - cd = 0
now add cd to both sides
ab - ac -cd + cd = cd
ab - ac = cd
now factor the left side by taking out the 'a'
a(b-c) = cd
now divide both sides by (b-c)
a = cd / (b-c)
done
x=125/100
Divide the yarn by the bracelet number, and that's the answer I believe. Hope that helps
