Question

w1 • d1 = w2 • d2

Answer 1

Do you have an answer? Or a guess

Answer 2

my guess was d1*d2 = w1* w2

Answer 3

what are you asked to do?

Answer 4

and you cannot rearrange w1 * d1 = w2 * d2 to d1*d2 = w1* w2, not right.

maybe try to divide both sides by w2 then divide both sides by d1? we don't know what options you have...