Please help! (4.2)/(7(5)/(7) ) = (3(1)/(9) )/(d)

Question

Please help!


`(4.2)/(7(5)/(7) ) = (3(1)/(9) )/(d)`

Answer 1

d = 40/7

Explanation:

Solve for d:

0.544444 = 28/(9 d)

0.544444 = 49/90:

49/90 = 28/(9 d)

49/90 = 28/(9 d) is equivalent to 28/(9 d) = 49/90:

28/(9 d) = 49/90

Take the reciprocal of both sides:

(9 d)/28 = 90/49

Multiply both sides by 28/9:

Answer: d = 40/7