Solve 1/4 (20-4a) = 6-a

A. - 1

B. 0

C. all real numbers

D. no solution

1/4 (20-4a) = 6-a

We simplify the equation to the form, which is simple to understand

1/4 (20-4a) = 6-a

Simplifying:

+ 0.25 * (20-4a) = 6-a

Reorder the terms in parentheses

+ (+5-1a) = 6-a

Remove unnecessary parentheses

+5-1a=+6-a

We move all terms containing a to the left and all other terms to the right.

-1a+1a=+6-5

We simplify left and right side of the equation.

a=+1

0=1

The left and right sides are not equal, therefore there is no solution. This equation is invalid.