Let s be the number of shoes. We have two equations:

(1) C = 5s + 650

(2) C = 4s + 700

Set the costs equal to each other

5s + 650 = 4s + 700

Subtract 4s from each side

s + 650 = 700

Subtract 650 from each side

**s =50**

- Thread starter math_celebrity
- Start date