Carlos is solving the equation 1/4 * x - 5/2 = - 1/8 His solution is as follows.

1/4 * x - 5/2 = - 1/8

5/2

5/2

Add 5/2 to both sides.

1/4 * x |= 21 8

- 1/8 + 5/2 = - 1/8 + 20/8 = 21/8

4 * 1/4 * x = 4 * 21/8

Multiply both sides by 4.

x= boxed 21/2

4 * 21/8 = 21/2

In which part of the solution, if any, did Carlos make the first error?

(1 point)

He added 5/2 both sides.

O He incorrectly added - 1/8 and 5/2

O He did not make any errors.

O He multiplied both sides by 4.