the number of bagels b remaining in a dozen depends on the number s that have been sold

Question

the number of bagels b remaining in a dozen depends on the number s that have been sold

Answer 1

Jagmeet, don't overthink this. Let's say we sold 5 bagels. Then s would be 5. How many would we have left? 7, because 12 - 5 = 7, and b = 7.

 

Replace the numbers in the 12 - 5 = 7 with the letters, though in algebra, we put the "output" first.

 

b = 12 - s