Answer:
The buyer bought four erasers and a magazine for $25.
The cost of each magazine is $5
The cost of an eraser is x dollars
The cost of 4 erasers is 4x
Explanation:
Cost of the Erasers + Cost of the Magazine = Total Cost
4x + $5 = $25
Subtract 5 from both sides to isolate the term with the variable.
4x + 5 -5 = 25 -5
4x = 20
The last thing you do is you divide it by 4 on both sides to isolate the variable.
x = 20/4 = $5