Aliyah has $24 to spend on 7 pencils. After buying them she had $10. How much did each pencil cost?

Aliyah has $24 to spend on 7 pencils. After buying them she had $10. How much did each pencil cost?

Let the cost of each pencil be p. The phrase leftover means we add to the cost of the pencils after buying them. We're given the equation:
7p + 10 = 24

To solve for p, we type this equation into our search engine and we get:
p = 2