Question

1/4(20−4a)=6−a

solve for a

Answer 1

1/4(20-4a)=6-a   (distribute 1/4)

5-a=6-a    (subtract 5 to both sides)

-a=1-a     (add "a" to both sides)

0=1

When this happens where the equation is not true, it means that a=no solution because there would be no "a" value that you could plug in to make the equation true.