Question

I need an equation example with an unknown factor?

Answer 1

I want to buy eight bracelets, I don't know how much each bracelet costs, but the final cost will be $39.67.
The equation would look like this:
8 x c = 39.67
Where c equals cost.
To find the answer I would do the following:
8 x c = 39.67
c = 39.67 / 8
c ≈ 4.95
Each bracelet costs about $4.95.

Answer 2

Lets say, I bought 3 cakes in the store and I spent $300, how much does a cake cost?
The equation representing that situation is the following, calling x the cake cost, our unknown factor:
3x = 300
we can solve this equation by dividing all equation by 3:
x = 100
therefore each cake costs $100