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To find the value of (a-b)/(c-d) given that a*d = 60, we can start by solving for a and d.

Given: a*d = 60

We can rewrite this equation as: a = 60/d

Now, we substitute this expression for a into the original equation:

(a-b)/(c-d) = (a + b)/(c+d)

(60/d - b)/(c-d) = (60/d + b)/(c+d)

Next, we can cross multiply to get rid of the denominators:

(60 - bd)/(c-d) = (60 + bd)/(c+d)

Now, we can simplify this equation further by multiplying both sides by (c-d)(c+d) to get rid of the denominators:

(c+d)(60 - bd) = (c-d)(60 + bd)

Expanding both sides:

60c + 60d - bdc - bdd = 60c - 60d + bdc - bdd

Simplify the equation:

120d = 0

Since 120d = 0, this implies that d = 0.

Now, substitute d = 0 back into the equation a*d = 60:

a*0 = 60 0 = 60

This shows that the original equation is not solvable with the given conditions.