Respuesta :

Answer: d = 147/4 or 36.75

Edward didn't isolate for 'd' by rearranging the terms.

(4/7)d = 21 (Multiply both sides by 7 to get rid of the 7 on the left side)

4d = 21 · 7

4d = 147 (Divide both sides by 4 to isolate for d)

d = 147/4 or 36.75

Already answered that lol sujdiff